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Finding the Fourth Proportional to 181,726.40, 250,886.76 and 121,496.40

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Solution

The fourth proportional to 181,726.40, 250,886.76 and 121,496.40 is: 167,734.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    181,726.40 : 250,886.76 = 121,496.40 : x
  2. Step 2: Convert to fraction form
    181,726.40/250,886.76 = 121,496.40/x
  3. Step 3: Cross multiply
    181,726.40x = 250,886.76 × 121,496.40
  4. Step 4: Simplify right side
    181,726.40x = 30,481,838,147.66
  5. Step 5: Solve for x
    x = 30,481,838,147.66/181,726.40
  6. Step 6: Final answer
    x = 167,734.78

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1.5x scale

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.