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Finding the Fourth Proportional to 113,059, 156,021.42 and 62,762.68

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Solution

The fourth proportional to 113,059, 156,021.42 and 62,762.68 is: 86,612.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,059 : 156,021.42 = 62,762.68 : x
  2. Step 2: Convert to fraction form
    113,059/156,021.42 = 62,762.68/x
  3. Step 3: Cross multiply
    113,059x = 156,021.42 × 62,762.68
  4. Step 4: Simplify right side
    113,059x = 9,792,322,456.61
  5. Step 5: Solve for x
    x = 9,792,322,456.61/113,059
  6. Step 6: Final answer
    x = 86,612.50

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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.