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Finding the Fourth Proportional to 79,829,373.80, 119,744,060.70 and 54,320,205.80

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Solution

The fourth proportional to 79,829,373.80, 119,744,060.70 and 54,320,205.80 is: 81,480,308.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,829,373.80 : 119,744,060.70 = 54,320,205.80 : x
  2. Step 2: Convert to fraction form
    79,829,373.80/119,744,060.70 = 54,320,205.80/x
  3. Step 3: Cross multiply
    79,829,373.80x = 119,744,060.70 × 54,320,205.80
  4. Step 4: Simplify right side
    79,829,373.80x = 6,504,522,020,551,692
  5. Step 5: Solve for x
    x = 6,504,522,020,551,692/79,829,373.80
  6. Step 6: Final answer
    x = 81,480,308.70

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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.