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Finding the Fourth Proportional to 67,787.70, 93,491.76 and 47,711.10

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Solution

The fourth proportional to 67,787.70, 93,491.76 and 47,711.10 is: 65,802.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,787.70 : 93,491.76 = 47,711.10 : x
  2. Step 2: Convert to fraction form
    67,787.70/93,491.76 = 47,711.10/x
  3. Step 3: Cross multiply
    67,787.70x = 93,491.76 × 47,711.10
  4. Step 4: Simplify right side
    67,787.70x = 4,460,594,710.54
  5. Step 5: Solve for x
    x = 4,460,594,710.54/67,787.70
  6. Step 6: Final answer
    x = 65,802.42

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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.