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Finding the Fourth Proportional to 462,479.76, 693,719.96 and 125,520.48

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Solution

The fourth proportional to 462,479.76, 693,719.96 and 125,520.48 is: 188,280.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    462,479.76 : 693,719.96 = 125,520.48 : x
  2. Step 2: Convert to fraction form
    462,479.76/693,719.96 = 125,520.48/x
  3. Step 3: Cross multiply
    462,479.76x = 693,719.96 × 125,520.48
  4. Step 4: Simplify right side
    462,479.76x = 87,076,061,737.18
  5. Step 5: Solve for x
    x = 87,076,061,737.18/462,479.76
  6. Step 6: Final answer
    x = 188,280.81

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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.