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Finding the Fourth Proportional to 101,534.50, 140,098.16 and 65,719.54

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Solution

The fourth proportional to 101,534.50, 140,098.16 and 65,719.54 is: 90,680.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,534.50 : 140,098.16 = 65,719.54 : x
  2. Step 2: Convert to fraction form
    101,534.50/140,098.16 = 65,719.54/x
  3. Step 3: Cross multiply
    101,534.50x = 140,098.16 × 65,719.54
  4. Step 4: Simplify right side
    101,534.50x = 9,207,186,630.05
  5. Step 5: Solve for x
    x = 9,207,186,630.05/101,534.50
  6. Step 6: Final answer
    x = 90,680.38

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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.