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Finding the Fourth Proportional to 992,253.60, 1,488,963.60 and 361,231.20

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Solution

The fourth proportional to 992,253.60, 1,488,963.60 and 361,231.20 is: 542,059.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    992,253.60 : 1,488,963.60 = 361,231.20 : x
  2. Step 2: Convert to fraction form
    992,253.60/1,488,963.60 = 361,231.20/x
  3. Step 3: Cross multiply
    992,253.60x = 1,488,963.60 × 361,231.20
  4. Step 4: Simplify right side
    992,253.60x = 537,860,107,984.32
  5. Step 5: Solve for x
    x = 537,860,107,984.32/992,253.60
  6. Step 6: Final answer
    x = 542,059.11

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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.