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Finding the Fourth Proportional to 111,543.56, 153,873.07 and 71,214.92

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Solution

The fourth proportional to 111,543.56, 153,873.07 and 71,214.92 is: 98,240.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,543.56 : 153,873.07 = 71,214.92 : x
  2. Step 2: Convert to fraction form
    111,543.56/153,873.07 = 71,214.92/x
  3. Step 3: Cross multiply
    111,543.56x = 153,873.07 × 71,214.92
  4. Step 4: Simplify right side
    111,543.56x = 10,958,058,576.85
  5. Step 5: Solve for x
    x = 10,958,058,576.85/111,543.56
  6. Step 6: Final answer
    x = 98,240.17

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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.