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Finding the Fourth Proportional to 82,891.73, 124,374.34 and 43,439.46

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Solution

The fourth proportional to 82,891.73, 124,374.34 and 43,439.46 is: 65,178.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,891.73 : 124,374.34 = 43,439.46 : x
  2. Step 2: Convert to fraction form
    82,891.73/124,374.34 = 43,439.46/x
  3. Step 3: Cross multiply
    82,891.73x = 124,374.34 × 43,439.46
  4. Step 4: Simplify right side
    82,891.73x = 5,402,754,167.46
  5. Step 5: Solve for x
    x = 5,402,754,167.46/82,891.73
  6. Step 6: Final answer
    x = 65,178.45

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.