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Finding the Fourth Proportional to 123,463.72, 170,378.66 and 69,748.66

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Solution

The fourth proportional to 123,463.72, 170,378.66 and 69,748.66 is: 96,252.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,463.72 : 170,378.66 = 69,748.66 : x
  2. Step 2: Convert to fraction form
    123,463.72/170,378.66 = 69,748.66/x
  3. Step 3: Cross multiply
    123,463.72x = 170,378.66 × 69,748.66
  4. Step 4: Simplify right side
    123,463.72x = 11,883,683,227.60
  5. Step 5: Solve for x
    x = 11,883,683,227.60/123,463.72
  6. Step 6: Final answer
    x = 96,252.43

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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.