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Finding the Fourth Proportional to 561,652,552.80, 842,478,829.20 and 377,986,543.20

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Solution

The fourth proportional to 561,652,552.80, 842,478,829.20 and 377,986,543.20 is: 566,979,814.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    561,652,552.80 : 842,478,829.20 = 377,986,543.20 : x
  2. Step 2: Convert to fraction form
    561,652,552.80/842,478,829.20 = 377,986,543.20/x
  3. Step 3: Cross multiply
    561,652,552.80x = 842,478,829.20 × 377,986,543.20
  4. Step 4: Simplify right side
    561,652,552.80x = 318,445,660,368,491,200
  5. Step 5: Solve for x
    x = 318,445,660,368,491,200/561,652,552.80
  6. Step 6: Final answer
    x = 566,979,814.80

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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.