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Finding the Fourth Proportional to 545,691.60, 818,537.40 and 171,829.20

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Solution

The fourth proportional to 545,691.60, 818,537.40 and 171,829.20 is: 257,743.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    545,691.60 : 818,537.40 = 171,829.20 : x
  2. Step 2: Convert to fraction form
    545,691.60/818,537.40 = 171,829.20/x
  3. Step 3: Cross multiply
    545,691.60x = 818,537.40 × 171,829.20
  4. Step 4: Simplify right side
    545,691.60x = 140,648,626,612.08
  5. Step 5: Solve for x
    x = 140,648,626,612.08/545,691.60
  6. Step 6: Final answer
    x = 257,743.80

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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.