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Finding the Fourth Proportional to 86,397.67, 119,244.05 and 68,628.30

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Solution

The fourth proportional to 86,397.67, 119,244.05 and 68,628.30 is: 94,719.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,397.67 : 119,244.05 = 68,628.30 : x
  2. Step 2: Convert to fraction form
    86,397.67/119,244.05 = 68,628.30/x
  3. Step 3: Cross multiply
    86,397.67x = 119,244.05 × 68,628.30
  4. Step 4: Simplify right side
    86,397.67x = 8,183,516,436.62
  5. Step 5: Solve for x
    x = 8,183,516,436.62/86,397.67
  6. Step 6: Final answer
    x = 94,719.18

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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.