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Finding the Fourth Proportional to 124,754.87, 172,161.55 and 71,039.89

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Solution

The fourth proportional to 124,754.87, 172,161.55 and 71,039.89 is: 98,034.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,754.87 : 172,161.55 = 71,039.89 : x
  2. Step 2: Convert to fraction form
    124,754.87/172,161.55 = 71,039.89/x
  3. Step 3: Cross multiply
    124,754.87x = 172,161.55 × 71,039.89
  4. Step 4: Simplify right side
    124,754.87x = 12,230,336,358.22
  5. Step 5: Solve for x
    x = 12,230,336,358.22/124,754.87
  6. Step 6: Final answer
    x = 98,034.94

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1.5x scale

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.