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Finding the Fourth Proportional to 457,217.52, 685,575.72 and 141,586.80

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Solution

The fourth proportional to 457,217.52, 685,575.72 and 141,586.80 is: 212,302.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    457,217.52 : 685,575.72 = 141,586.80 : x
  2. Step 2: Convert to fraction form
    457,217.52/685,575.72 = 141,586.80/x
  3. Step 3: Cross multiply
    457,217.52x = 685,575.72 × 141,586.80
  4. Step 4: Simplify right side
    457,217.52x = 97,068,472,352.50
  5. Step 5: Solve for x
    x = 97,068,472,352.50/457,217.52
  6. Step 6: Final answer
    x = 212,302.61

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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.