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Finding the Fourth Proportional to 70,189.86, 96,862.72 and 38,358.76

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Solution

The fourth proportional to 70,189.86, 96,862.72 and 38,358.76 is: 52,935.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,189.86 : 96,862.72 = 38,358.76 : x
  2. Step 2: Convert to fraction form
    70,189.86/96,862.72 = 38,358.76/x
  3. Step 3: Cross multiply
    70,189.86x = 96,862.72 × 38,358.76
  4. Step 4: Simplify right side
    70,189.86x = 3,715,533,744.91
  5. Step 5: Solve for x
    x = 3,715,533,744.91/70,189.86
  6. Step 6: Final answer
    x = 52,935.48

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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.