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Finding the Fourth Proportional to 616,713.20, 924,378.60 and 261,666.80

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Solution

The fourth proportional to 616,713.20, 924,378.60 and 261,666.80 is: 392,206.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    616,713.20 : 924,378.60 = 261,666.80 : x
  2. Step 2: Convert to fraction form
    616,713.20/924,378.60 = 261,666.80/x
  3. Step 3: Cross multiply
    616,713.20x = 924,378.60 × 261,666.80
  4. Step 4: Simplify right side
    616,713.20x = 241,879,190,250.48
  5. Step 5: Solve for x
    x = 241,879,190,250.48/616,713.20
  6. Step 6: Final answer
    x = 392,206.93

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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.