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Finding the Fourth Proportional to 124,718.40, 187,538.40 and 104,443.20

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Solution

The fourth proportional to 124,718.40, 187,538.40 and 104,443.20 is: 157,050.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,718.40 : 187,538.40 = 104,443.20 : x
  2. Step 2: Convert to fraction form
    124,718.40/187,538.40 = 104,443.20/x
  3. Step 3: Cross multiply
    124,718.40x = 187,538.40 × 104,443.20
  4. Step 4: Simplify right side
    124,718.40x = 19,587,110,618.88
  5. Step 5: Solve for x
    x = 19,587,110,618.88/124,718.40
  6. Step 6: Final answer
    x = 157,050.69

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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.