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Finding the Fourth Proportional to 100,484.34, 138,658.69 and 60,197.46

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Solution

The fourth proportional to 100,484.34, 138,658.69 and 60,197.46 is: 83,066.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,484.34 : 138,658.69 = 60,197.46 : x
  2. Step 2: Convert to fraction form
    100,484.34/138,658.69 = 60,197.46/x
  3. Step 3: Cross multiply
    100,484.34x = 138,658.69 × 60,197.46
  4. Step 4: Simplify right side
    100,484.34x = 8,346,900,944.93
  5. Step 5: Solve for x
    x = 8,346,900,944.93/100,484.34
  6. Step 6: Final answer
    x = 83,066.68

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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.