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Finding the Fourth Proportional to 101,451.78, 140,011.20 and 58,444.56

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Solution

The fourth proportional to 101,451.78, 140,011.20 and 58,444.56 is: 80,657.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,451.78 : 140,011.20 = 58,444.56 : x
  2. Step 2: Convert to fraction form
    101,451.78/140,011.20 = 58,444.56/x
  3. Step 3: Cross multiply
    101,451.78x = 140,011.20 × 58,444.56
  4. Step 4: Simplify right side
    101,451.78x = 8,182,892,979.07
  5. Step 5: Solve for x
    x = 8,182,892,979.07/101,451.78
  6. Step 6: Final answer
    x = 80,657.95

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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.