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Finding the Fourth Proportional to 65,230.48, 90,019.14 and 36,549.82

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Solution

The fourth proportional to 65,230.48, 90,019.14 and 36,549.82 is: 50,439.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,230.48 : 90,019.14 = 36,549.82 : x
  2. Step 2: Convert to fraction form
    65,230.48/90,019.14 = 36,549.82/x
  3. Step 3: Cross multiply
    65,230.48x = 90,019.14 × 36,549.82
  4. Step 4: Simplify right side
    65,230.48x = 3,290,183,363.55
  5. Step 5: Solve for x
    x = 3,290,183,363.55/65,230.48
  6. Step 6: Final answer
    x = 50,439.36

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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.