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Finding the Fourth Proportional to 185,486.88, 255,717.36 and 124,209.12

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Solution

The fourth proportional to 185,486.88, 255,717.36 and 124,209.12 is: 171,238.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    185,486.88 : 255,717.36 = 124,209.12 : x
  2. Step 2: Convert to fraction form
    185,486.88/255,717.36 = 124,209.12/x
  3. Step 3: Cross multiply
    185,486.88x = 255,717.36 × 124,209.12
  4. Step 4: Simplify right side
    185,486.88x = 31,762,428,254.32
  5. Step 5: Solve for x
    x = 31,762,428,254.32/185,486.88
  6. Step 6: Final answer
    x = 171,238.14

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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.