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Finding the Fourth Proportional to 59,112.88, 88,669.32 and 39,429.88

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Solution

The fourth proportional to 59,112.88, 88,669.32 and 39,429.88 is: 59,144.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    59,112.88 : 88,669.32 = 39,429.88 : x
  2. Step 2: Convert to fraction form
    59,112.88/88,669.32 = 39,429.88/x
  3. Step 3: Cross multiply
    59,112.88x = 88,669.32 × 39,429.88
  4. Step 4: Simplify right side
    59,112.88x = 3,496,220,647.28
  5. Step 5: Solve for x
    x = 3,496,220,647.28/59,112.88
  6. Step 6: Final answer
    x = 59,144.82

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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.