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Finding the Fourth Proportional to 109,732.70, 151,431.13 and 59,431.70

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Solution

The fourth proportional to 109,732.70, 151,431.13 and 59,431.70 is: 82,015.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,732.70 : 151,431.13 = 59,431.70 : x
  2. Step 2: Convert to fraction form
    109,732.70/151,431.13 = 59,431.70/x
  3. Step 3: Cross multiply
    109,732.70x = 151,431.13 × 59,431.70
  4. Step 4: Simplify right side
    109,732.70x = 8,999,809,488.82
  5. Step 5: Solve for x
    x = 8,999,809,488.82/109,732.70
  6. Step 6: Final answer
    x = 82,015.75

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1.5x scale

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.