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Finding the Fourth Proportional to 125,957.70, 173,647.44 and 90,085.14

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Solution

The fourth proportional to 125,957.70, 173,647.44 and 90,085.14 is: 124,192.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,957.70 : 173,647.44 = 90,085.14 : x
  2. Step 2: Convert to fraction form
    125,957.70/173,647.44 = 90,085.14/x
  3. Step 3: Cross multiply
    125,957.70x = 173,647.44 × 90,085.14
  4. Step 4: Simplify right side
    125,957.70x = 15,643,053,943.04
  5. Step 5: Solve for x
    x = 15,643,053,943.04/125,957.70
  6. Step 6: Final answer
    x = 124,192.92

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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.