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Finding the Fourth Proportional to 86,706.75, 119,665.05 and 48,983.43

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Solution

The fourth proportional to 86,706.75, 119,665.05 and 48,983.43 is: 67,602.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,706.75 : 119,665.05 = 48,983.43 : x
  2. Step 2: Convert to fraction form
    86,706.75/119,665.05 = 48,983.43/x
  3. Step 3: Cross multiply
    86,706.75x = 119,665.05 × 48,983.43
  4. Step 4: Simplify right side
    86,706.75x = 5,861,604,600.12
  5. Step 5: Solve for x
    x = 5,861,604,600.12/86,706.75
  6. Step 6: Final answer
    x = 67,602.63

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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.