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Finding the Fourth Proportional to 65,053.80, 89,763.12 and 36,758.88

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Solution

The fourth proportional to 65,053.80, 89,763.12 and 36,758.88 is: 50,720.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,053.80 : 89,763.12 = 36,758.88 : x
  2. Step 2: Convert to fraction form
    65,053.80/89,763.12 = 36,758.88/x
  3. Step 3: Cross multiply
    65,053.80x = 89,763.12 × 36,758.88
  4. Step 4: Simplify right side
    65,053.80x = 3,299,591,756.51
  5. Step 5: Solve for x
    x = 3,299,591,756.51/65,053.80
  6. Step 6: Final answer
    x = 50,720.97

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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.