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Finding the Fourth Proportional to 62,566.40, 86,320.96 and 38,358.40

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Solution

The fourth proportional to 62,566.40, 86,320.96 and 38,358.40 is: 52,921.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    62,566.40 : 86,320.96 = 38,358.40 : x
  2. Step 2: Convert to fraction form
    62,566.40/86,320.96 = 38,358.40/x
  3. Step 3: Cross multiply
    62,566.40x = 86,320.96 × 38,358.40
  4. Step 4: Simplify right side
    62,566.40x = 3,311,133,912.06
  5. Step 5: Solve for x
    x = 3,311,133,912.06/62,566.40
  6. Step 6: Final answer
    x = 52,921.92

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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.