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Finding the Fourth Proportional to 99,680,510.80, 149,587,639.80 and 34,984,190.80

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Solution

The fourth proportional to 99,680,510.80, 149,587,639.80 and 34,984,190.80 is: 52,499,756.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,680,510.80 : 149,587,639.80 = 34,984,190.80 : x
  2. Step 2: Convert to fraction form
    99,680,510.80/149,587,639.80 = 34,984,190.80/x
  3. Step 3: Cross multiply
    99,680,510.80x = 149,587,639.80 × 34,984,190.80
  4. Step 4: Simplify right side
    99,680,510.80x = 5,233,202,532,084,874
  5. Step 5: Solve for x
    x = 5,233,202,532,084,874/99,680,510.80
  6. Step 6: Final answer
    x = 52,499,756.37

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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.