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Finding the Fourth Proportional to 124,179, 186,305.28 and 71,626.20

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Solution

The fourth proportional to 124,179, 186,305.28 and 71,626.20 is: 107,460.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,179 : 186,305.28 = 71,626.20 : x
  2. Step 2: Convert to fraction form
    124,179/186,305.28 = 71,626.20/x
  3. Step 3: Cross multiply
    124,179x = 186,305.28 × 71,626.20
  4. Step 4: Simplify right side
    124,179x = 13,344,339,246.34
  5. Step 5: Solve for x
    x = 13,344,339,246.34/124,179
  6. Step 6: Final answer
    x = 107,460.51

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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.