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Finding the Fourth Proportional to 6,935,229.20, 10,402,843.80 and 6,515,325.20

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Solution

The fourth proportional to 6,935,229.20, 10,402,843.80 and 6,515,325.20 is: 9,772,987.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,935,229.20 : 10,402,843.80 = 6,515,325.20 : x
  2. Step 2: Convert to fraction form
    6,935,229.20/10,402,843.80 = 6,515,325.20/x
  3. Step 3: Cross multiply
    6,935,229.20x = 10,402,843.80 × 6,515,325.20
  4. Step 4: Simplify right side
    6,935,229.20x = 67,777,910,361,803.77
  5. Step 5: Solve for x
    x = 67,777,910,361,803.77/6,935,229.20
  6. Step 6: Final answer
    x = 9,772,987.80

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Similar ratio
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1.5x scale

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.