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Finding the Fourth Proportional to 109,772.85, 151,486.47 and 59,471.85

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Solution

The fourth proportional to 109,772.85, 151,486.47 and 59,471.85 is: 82,071.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,772.85 : 151,486.47 = 59,471.85 : x
  2. Step 2: Convert to fraction form
    109,772.85/151,486.47 = 59,471.85/x
  3. Step 3: Cross multiply
    109,772.85x = 151,486.47 × 59,471.85
  4. Step 4: Simplify right side
    109,772.85x = 9,009,180,620.87
  5. Step 5: Solve for x
    x = 9,009,180,620.87/109,772.85
  6. Step 6: Final answer
    x = 82,071.12

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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.