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Finding the Fourth Proportional to 84,719.52, 127,035.54 and 34,790.31

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Solution

The fourth proportional to 84,719.52, 127,035.54 and 34,790.31 is: 52,167.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,719.52 : 127,035.54 = 34,790.31 : x
  2. Step 2: Convert to fraction form
    84,719.52/127,035.54 = 34,790.31/x
  3. Step 3: Cross multiply
    84,719.52x = 127,035.54 × 34,790.31
  4. Step 4: Simplify right side
    84,719.52x = 4,419,605,817.62
  5. Step 5: Solve for x
    x = 4,419,605,817.62/84,719.52
  6. Step 6: Final answer
    x = 52,167.50

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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.