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Finding the Fourth Proportional to 520,725.16, 781,094.22 and 165,737.80

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Solution

The fourth proportional to 520,725.16, 781,094.22 and 165,737.80 is: 248,608.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    520,725.16 : 781,094.22 = 165,737.80 : x
  2. Step 2: Convert to fraction form
    520,725.16/781,094.22 = 165,737.80/x
  3. Step 3: Cross multiply
    520,725.16x = 781,094.22 × 165,737.80
  4. Step 4: Simplify right side
    520,725.16x = 129,456,837,615.52
  5. Step 5: Solve for x
    x = 129,456,837,615.52/520,725.16
  6. Step 6: Final answer
    x = 248,608.76

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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.