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Finding the Fourth Proportional to 63,057.93, 86,970.73 and 40,399.02

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Solution

The fourth proportional to 63,057.93, 86,970.73 and 40,399.02 is: 55,719.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    63,057.93 : 86,970.73 = 40,399.02 : x
  2. Step 2: Convert to fraction form
    63,057.93/86,970.73 = 40,399.02/x
  3. Step 3: Cross multiply
    63,057.93x = 86,970.73 × 40,399.02
  4. Step 4: Simplify right side
    63,057.93x = 3,513,532,377.11
  5. Step 5: Solve for x
    x = 3,513,532,377.11/63,057.93
  6. Step 6: Final answer
    x = 55,719.12

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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.