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Finding the Fourth Proportional to 19,957,101.60, 29,935,652.40 and 12,782,648.10

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Solution

The fourth proportional to 19,957,101.60, 29,935,652.40 and 12,782,648.10 is: 19,173,972.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,957,101.60 : 29,935,652.40 = 12,782,648.10 : x
  2. Step 2: Convert to fraction form
    19,957,101.60/29,935,652.40 = 12,782,648.10/x
  3. Step 3: Cross multiply
    19,957,101.60x = 29,935,652.40 × 12,782,648.10
  4. Step 4: Simplify right side
    19,957,101.60x = 382,656,910,273,120.44
  5. Step 5: Solve for x
    x = 382,656,910,273,120.44/19,957,101.60
  6. Step 6: Final answer
    x = 19,173,972.15

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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.