Home / 38,409,155.28-53,005,407.66-21,006,619.56

Finding the Fourth Proportional to 38,409,155.28, 53,005,407.66 and 21,006,619.56

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Solution

The fourth proportional to 38,409,155.28, 53,005,407.66 and 21,006,619.56 is: 28,989,557.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,409,155.28 : 53,005,407.66 = 21,006,619.56 : x
  2. Step 2: Convert to fraction form
    38,409,155.28/53,005,407.66 = 21,006,619.56/x
  3. Step 3: Cross multiply
    38,409,155.28x = 53,005,407.66 × 21,006,619.56
  4. Step 4: Simplify right side
    38,409,155.28x = 1,113,464,433,336,329.62
  5. Step 5: Solve for x
    x = 1,113,464,433,336,329.62/38,409,155.28
  6. Step 6: Final answer
    x = 28,989,557.96

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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.