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Finding the Fourth Proportional to 124,211.80, 186,317.70 and 104,966.20

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Solution

The fourth proportional to 124,211.80, 186,317.70 and 104,966.20 is: 157,449.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,211.80 : 186,317.70 = 104,966.20 : x
  2. Step 2: Convert to fraction form
    124,211.80/186,317.70 = 104,966.20/x
  3. Step 3: Cross multiply
    124,211.80x = 186,317.70 × 104,966.20
  4. Step 4: Simplify right side
    124,211.80x = 19,557,060,961.74
  5. Step 5: Solve for x
    x = 19,557,060,961.74/124,211.80
  6. Step 6: Final answer
    x = 157,449.30

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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.