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Finding the Fourth Proportional to 125,282.79, 187,895.43 and 74,696.13

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Solution

The fourth proportional to 125,282.79, 187,895.43 and 74,696.13 is: 112,027.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,282.79 : 187,895.43 = 74,696.13 : x
  2. Step 2: Convert to fraction form
    125,282.79/187,895.43 = 74,696.13/x
  3. Step 3: Cross multiply
    125,282.79x = 187,895.43 × 74,696.13
  4. Step 4: Simplify right side
    125,282.79x = 14,035,061,465.69
  5. Step 5: Solve for x
    x = 14,035,061,465.69/125,282.79
  6. Step 6: Final answer
    x = 112,027.05

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.