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Finding the Fourth Proportional to 124,763.16, 172,204.08 and 71,080.08

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Solution

The fourth proportional to 124,763.16, 172,204.08 and 71,080.08 is: 98,108.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,763.16 : 172,204.08 = 71,080.08 : x
  2. Step 2: Convert to fraction form
    124,763.16/172,204.08 = 71,080.08/x
  3. Step 3: Cross multiply
    124,763.16x = 172,204.08 × 71,080.08
  4. Step 4: Simplify right side
    124,763.16x = 12,240,279,782.73
  5. Step 5: Solve for x
    x = 12,240,279,782.73/124,763.16
  6. Step 6: Final answer
    x = 98,108.13

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.