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Finding the Fourth Proportional to 576,691.20, 865,911.60 and 443,721.60

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Solution

The fourth proportional to 576,691.20, 865,911.60 and 443,721.60 is: 666,255.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    576,691.20 : 865,911.60 = 443,721.60 : x
  2. Step 2: Convert to fraction form
    576,691.20/865,911.60 = 443,721.60/x
  3. Step 3: Cross multiply
    576,691.20x = 865,911.60 × 443,721.60
  4. Step 4: Simplify right side
    576,691.20x = 384,223,680,610.56
  5. Step 5: Solve for x
    x = 384,223,680,610.56/576,691.20
  6. Step 6: Final answer
    x = 666,255.49

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1.5x scale

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.