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Finding the Fourth Proportional to 124,691.77, 172,074.83 and 70,976.77

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Solution

The fourth proportional to 124,691.77, 172,074.83 and 70,976.77 is: 97,948.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,691.77 : 172,074.83 = 70,976.77 : x
  2. Step 2: Convert to fraction form
    124,691.77/172,074.83 = 70,976.77/x
  3. Step 3: Cross multiply
    124,691.77x = 172,074.83 × 70,976.77
  4. Step 4: Simplify right side
    124,691.77x = 12,213,315,487.85
  5. Step 5: Solve for x
    x = 12,213,315,487.85/124,691.77
  6. Step 6: Final answer
    x = 97,948.05

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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.