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Finding the Fourth Proportional to 86,213.49, 118,973.46 and 48,487.74

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Solution

The fourth proportional to 86,213.49, 118,973.46 and 48,487.74 is: 66,912.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,213.49 : 118,973.46 = 48,487.74 : x
  2. Step 2: Convert to fraction form
    86,213.49/118,973.46 = 48,487.74/x
  3. Step 3: Cross multiply
    86,213.49x = 118,973.46 × 48,487.74
  4. Step 4: Simplify right side
    86,213.49x = 5,768,754,195.38
  5. Step 5: Solve for x
    x = 5,768,754,195.38/86,213.49
  6. Step 6: Final answer
    x = 66,912.43

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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.