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Finding the Fourth Proportional to 6,912,570.80, 10,368,856.20 and 5,904,801.20

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Solution

The fourth proportional to 6,912,570.80, 10,368,856.20 and 5,904,801.20 is: 8,857,201.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,912,570.80 : 10,368,856.20 = 5,904,801.20 : x
  2. Step 2: Convert to fraction form
    6,912,570.80/10,368,856.20 = 5,904,801.20/x
  3. Step 3: Cross multiply
    6,912,570.80x = 10,368,856.20 × 5,904,801.20
  4. Step 4: Simplify right side
    6,912,570.80x = 61,226,034,532,387.44
  5. Step 5: Solve for x
    x = 61,226,034,532,387.44/6,912,570.80
  6. Step 6: Final answer
    x = 8,857,201.80

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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.