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Finding the Fourth Proportional to 6,702,387.40, 9,982,594.61 and 6,669,728.20

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Solution

The fourth proportional to 6,702,387.40, 9,982,594.61 and 6,669,728.20 is: 9,933,951.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,702,387.40 : 9,982,594.61 = 6,669,728.20 : x
  2. Step 2: Convert to fraction form
    6,702,387.40/9,982,594.61 = 6,669,728.20/x
  3. Step 3: Cross multiply
    6,702,387.40x = 9,982,594.61 × 6,669,728.20
  4. Step 4: Simplify right side
    6,702,387.40x = 66,581,192,779,485
  5. Step 5: Solve for x
    x = 66,581,192,779,485/6,702,387.40
  6. Step 6: Final answer
    x = 9,933,951.71

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.