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Finding the Fourth Proportional to 125,253.84, 172,859.47 and 71,537.68

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Solution

The fourth proportional to 125,253.84, 172,859.47 and 71,537.68 is: 98,727.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,253.84 : 172,859.47 = 71,537.68 : x
  2. Step 2: Convert to fraction form
    125,253.84/172,859.47 = 71,537.68/x
  3. Step 3: Cross multiply
    125,253.84x = 172,859.47 × 71,537.68
  4. Step 4: Simplify right side
    125,253.84x = 12,365,965,487.06
  5. Step 5: Solve for x
    x = 12,365,965,487.06/125,253.84
  6. Step 6: Final answer
    x = 98,727.23

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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.