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Finding the Fourth Proportional to 121,229.80, 181,026.77 and 99,087.72

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Solution

The fourth proportional to 121,229.80, 181,026.77 and 99,087.72 is: 147,963.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,229.80 : 181,026.77 = 99,087.72 : x
  2. Step 2: Convert to fraction form
    121,229.80/181,026.77 = 99,087.72/x
  3. Step 3: Cross multiply
    121,229.80x = 181,026.77 × 99,087.72
  4. Step 4: Simplify right side
    121,229.80x = 17,937,529,898.26
  5. Step 5: Solve for x
    x = 17,937,529,898.26/121,229.80
  6. Step 6: Final answer
    x = 147,963.04

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.