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Finding the Fourth Proportional to 59,087.70, 88,639.65 and 19,640.70

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Solution

The fourth proportional to 59,087.70, 88,639.65 and 19,640.70 is: 29,463.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    59,087.70 : 88,639.65 = 19,640.70 : x
  2. Step 2: Convert to fraction form
    59,087.70/88,639.65 = 19,640.70/x
  3. Step 3: Cross multiply
    59,087.70x = 88,639.65 × 19,640.70
  4. Step 4: Simplify right side
    59,087.70x = 1,740,944,773.76
  5. Step 5: Solve for x
    x = 1,740,944,773.76/59,087.70
  6. Step 6: Final answer
    x = 29,463.74

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.