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Finding the Fourth Proportional to 10,369,879.60, 15,554,819.40 and 7,794,468.40

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Solution

The fourth proportional to 10,369,879.60, 15,554,819.40 and 7,794,468.40 is: 11,691,702.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,369,879.60 : 15,554,819.40 = 7,794,468.40 : x
  2. Step 2: Convert to fraction form
    10,369,879.60/15,554,819.40 = 7,794,468.40/x
  3. Step 3: Cross multiply
    10,369,879.60x = 15,554,819.40 × 7,794,468.40
  4. Step 4: Simplify right side
    10,369,879.60x = 121,241,548,281,006.97
  5. Step 5: Solve for x
    x = 121,241,548,281,006.97/10,369,879.60
  6. Step 6: Final answer
    x = 11,691,702.60

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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.