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Finding the Fourth Proportional to 65,139.19, 89,892.08 and 35,331.19

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Solution

The fourth proportional to 65,139.19, 89,892.08 and 35,331.19 is: 48,757.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,139.19 : 89,892.08 = 35,331.19 : x
  2. Step 2: Convert to fraction form
    65,139.19/89,892.08 = 35,331.19/x
  3. Step 3: Cross multiply
    65,139.19x = 89,892.08 × 35,331.19
  4. Step 4: Simplify right side
    65,139.19x = 3,175,993,889.08
  5. Step 5: Solve for x
    x = 3,175,993,889.08/65,139.19
  6. Step 6: Final answer
    x = 48,757.04

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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.