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Finding the Fourth Proportional to 616,087.20, 924,001.20 and 261,112.80

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Solution

The fourth proportional to 616,087.20, 924,001.20 and 261,112.80 is: 391,614.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    616,087.20 : 924,001.20 = 261,112.80 : x
  2. Step 2: Convert to fraction form
    616,087.20/924,001.20 = 261,112.80/x
  3. Step 3: Cross multiply
    616,087.20x = 924,001.20 × 261,112.80
  4. Step 4: Simplify right side
    616,087.20x = 241,268,540,535.36
  5. Step 5: Solve for x
    x = 241,268,540,535.36/616,087.20
  6. Step 6: Final answer
    x = 391,614.27

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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.