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Finding the Fourth Proportional to 110,876.43, 153,009.62 and 63,129.80

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Solution

The fourth proportional to 110,876.43, 153,009.62 and 63,129.80 is: 87,119.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    110,876.43 : 153,009.62 = 63,129.80 : x
  2. Step 2: Convert to fraction form
    110,876.43/153,009.62 = 63,129.80/x
  3. Step 3: Cross multiply
    110,876.43x = 153,009.62 × 63,129.80
  4. Step 4: Simplify right side
    110,876.43x = 9,659,466,708.68
  5. Step 5: Solve for x
    x = 9,659,466,708.68/110,876.43
  6. Step 6: Final answer
    x = 87,119.21

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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.