Home / 39,727,719,079.76-54,823,852,011.95-21,663,189,650.72

Finding the Fourth Proportional to 39,727,719,079.76, 54,823,852,011.95 and 21,663,189,650.72

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Solution

The fourth proportional to 39,727,719,079.76, 54,823,852,011.95 and 21,663,189,650.72 is: 29,894,983,427.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,727,719,079.76 : 54,823,852,011.95 = 21,663,189,650.72 : x
  2. Step 2: Convert to fraction form
    39,727,719,079.76/54,823,852,011.95 = 21,663,189,650.72/x
  3. Step 3: Cross multiply
    39,727,719,079.76x = 54,823,852,011.95 × 21,663,189,650.72
  4. Step 4: Simplify right side
    39,727,719,079.76x = 1,187,659,503,517,497,556,992
  5. Step 5: Solve for x
    x = 1,187,659,503,517,497,556,992/39,727,719,079.76
  6. Step 6: Final answer
    x = 29,894,983,427.90

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.