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Finding the Fourth Proportional to 92,279,337.90, 138,419,006.85 and 90,844,447.20

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Solution

The fourth proportional to 92,279,337.90, 138,419,006.85 and 90,844,447.20 is: 136,266,670.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,279,337.90 : 138,419,006.85 = 90,844,447.20 : x
  2. Step 2: Convert to fraction form
    92,279,337.90/138,419,006.85 = 90,844,447.20/x
  3. Step 3: Cross multiply
    92,279,337.90x = 138,419,006.85 × 90,844,447.20
  4. Step 4: Simplify right side
    92,279,337.90x = 12,574,598,159,261,264
  5. Step 5: Solve for x
    x = 12,574,598,159,261,264/92,279,337.90
  6. Step 6: Final answer
    x = 136,266,670.80

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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.