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Finding the Fourth Proportional to 10,661,397.18, 15,992,083.34 and 3,472,919.46

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Solution

The fourth proportional to 10,661,397.18, 15,992,083.34 and 3,472,919.46 is: 5,209,375.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,661,397.18 : 15,992,083.34 = 3,472,919.46 : x
  2. Step 2: Convert to fraction form
    10,661,397.18/15,992,083.34 = 3,472,919.46/x
  3. Step 3: Cross multiply
    10,661,397.18x = 15,992,083.34 × 3,472,919.46
  4. Step 4: Simplify right side
    10,661,397.18x = 55,539,217,437,427.80
  5. Step 5: Solve for x
    x = 55,539,217,437,427.80/10,661,397.18
  6. Step 6: Final answer
    x = 5,209,375.14

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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.