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Finding the Fourth Proportional to 129,777.52, 193,727.60 and 114,031.12

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Solution

The fourth proportional to 129,777.52, 193,727.60 and 114,031.12 is: 170,221.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,777.52 : 193,727.60 = 114,031.12 : x
  2. Step 2: Convert to fraction form
    129,777.52/193,727.60 = 114,031.12/x
  3. Step 3: Cross multiply
    129,777.52x = 193,727.60 × 114,031.12
  4. Step 4: Simplify right side
    129,777.52x = 22,090,975,202.91
  5. Step 5: Solve for x
    x = 22,090,975,202.91/129,777.52
  6. Step 6: Final answer
    x = 170,221.89

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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.