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Finding the Fourth Proportional to 100,592.17, 138,759.46 and 62,800.81

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Solution

The fourth proportional to 100,592.17, 138,759.46 and 62,800.81 is: 86,629.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,592.17 : 138,759.46 = 62,800.81 : x
  2. Step 2: Convert to fraction form
    100,592.17/138,759.46 = 62,800.81/x
  3. Step 3: Cross multiply
    100,592.17x = 138,759.46 × 62,800.81
  4. Step 4: Simplify right side
    100,592.17x = 8,714,206,483.16
  5. Step 5: Solve for x
    x = 8,714,206,483.16/100,592.17
  6. Step 6: Final answer
    x = 86,629.07

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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.