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Finding the Fourth Proportional to 99,279,660.80, 148,919,491.20 and 73,770,492.80

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Solution

The fourth proportional to 99,279,660.80, 148,919,491.20 and 73,770,492.80 is: 110,655,739.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,279,660.80 : 148,919,491.20 = 73,770,492.80 : x
  2. Step 2: Convert to fraction form
    99,279,660.80/148,919,491.20 = 73,770,492.80/x
  3. Step 3: Cross multiply
    99,279,660.80x = 148,919,491.20 × 73,770,492.80
  4. Step 4: Simplify right side
    99,279,660.80x = 10,985,864,253,349,262
  5. Step 5: Solve for x
    x = 10,985,864,253,349,262/99,279,660.80
  6. Step 6: Final answer
    x = 110,655,739.20

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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.