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Finding the Fourth Proportional to 58,039.20, 86,929.20 and 44,787.60

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Solution

The fourth proportional to 58,039.20, 86,929.20 and 44,787.60 is: 67,081.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,039.20 : 86,929.20 = 44,787.60 : x
  2. Step 2: Convert to fraction form
    58,039.20/86,929.20 = 44,787.60/x
  3. Step 3: Cross multiply
    58,039.20x = 86,929.20 × 44,787.60
  4. Step 4: Simplify right side
    58,039.20x = 3,893,350,237.92
  5. Step 5: Solve for x
    x = 3,893,350,237.92/58,039.20
  6. Step 6: Final answer
    x = 67,081.39

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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.