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Finding the Fourth Proportional to 157,689.87, 236,565.96 and 57,850.98

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Solution

The fourth proportional to 157,689.87, 236,565.96 and 57,850.98 is: 86,787.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,689.87 : 236,565.96 = 57,850.98 : x
  2. Step 2: Convert to fraction form
    157,689.87/236,565.96 = 57,850.98/x
  3. Step 3: Cross multiply
    157,689.87x = 236,565.96 × 57,850.98
  4. Step 4: Simplify right side
    157,689.87x = 13,685,572,620.64
  5. Step 5: Solve for x
    x = 13,685,572,620.64/157,689.87
  6. Step 6: Final answer
    x = 86,787.90

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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.