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Finding the Fourth Proportional to 99,812.10, 149,718.15 and 96,312.90

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Solution

The fourth proportional to 99,812.10, 149,718.15 and 96,312.90 is: 144,469.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,812.10 : 149,718.15 = 96,312.90 : x
  2. Step 2: Convert to fraction form
    99,812.10/149,718.15 = 96,312.90/x
  3. Step 3: Cross multiply
    99,812.10x = 149,718.15 × 96,312.90
  4. Step 4: Simplify right side
    99,812.10x = 14,419,789,209.14
  5. Step 5: Solve for x
    x = 14,419,789,209.14/99,812.10
  6. Step 6: Final answer
    x = 144,469.35

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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.