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Finding the Fourth Proportional to 592,339,862.80, 888,509,794.20 and 420,152,978.80

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Solution

The fourth proportional to 592,339,862.80, 888,509,794.20 and 420,152,978.80 is: 630,229,468.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    592,339,862.80 : 888,509,794.20 = 420,152,978.80 : x
  2. Step 2: Convert to fraction form
    592,339,862.80/888,509,794.20 = 420,152,978.80/x
  3. Step 3: Cross multiply
    592,339,862.80x = 888,509,794.20 × 420,152,978.80
  4. Step 4: Simplify right side
    592,339,862.80x = 373,310,036,726,105,024
  5. Step 5: Solve for x
    x = 373,310,036,726,105,024/592,339,862.80
  6. Step 6: Final answer
    x = 630,229,468.20

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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.