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Finding the Fourth Proportional to 615,909.60, 923,864.40 and 531,928.80

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Solution

The fourth proportional to 615,909.60, 923,864.40 and 531,928.80 is: 797,893.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    615,909.60 : 923,864.40 = 531,928.80 : x
  2. Step 2: Convert to fraction form
    615,909.60/923,864.40 = 531,928.80/x
  3. Step 3: Cross multiply
    615,909.60x = 923,864.40 × 531,928.80
  4. Step 4: Simplify right side
    615,909.60x = 491,430,081,654.72
  5. Step 5: Solve for x
    x = 491,430,081,654.72/615,909.60
  6. Step 6: Final answer
    x = 797,893.20

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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.