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Finding the Fourth Proportional to 125,194.20, 172,827.86 and 71,468.84

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Solution

The fourth proportional to 125,194.20, 172,827.86 and 71,468.84 is: 98,661.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,194.20 : 172,827.86 = 71,468.84 : x
  2. Step 2: Convert to fraction form
    125,194.20/172,827.86 = 71,468.84/x
  3. Step 3: Cross multiply
    125,194.20x = 172,827.86 × 71,468.84
  4. Step 4: Simplify right side
    125,194.20x = 12,351,805,988.42
  5. Step 5: Solve for x
    x = 12,351,805,988.42/125,194.20
  6. Step 6: Final answer
    x = 98,661.17

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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.