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Finding the Fourth Proportional to 113,728.55, 156,944.93 and 62,744.49

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Solution

The fourth proportional to 113,728.55, 156,944.93 and 62,744.49 is: 86,587.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,728.55 : 156,944.93 = 62,744.49 : x
  2. Step 2: Convert to fraction form
    113,728.55/156,944.93 = 62,744.49/x
  3. Step 3: Cross multiply
    113,728.55x = 156,944.93 × 62,744.49
  4. Step 4: Simplify right side
    113,728.55x = 9,847,429,277.21
  5. Step 5: Solve for x
    x = 9,847,429,277.21/113,728.55
  6. Step 6: Final answer
    x = 86,587.14

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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.