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Finding the Fourth Proportional to 48,643.56, 67,112.67 and 38,402.13

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Solution

The fourth proportional to 48,643.56, 67,112.67 and 38,402.13 is: 52,982.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    48,643.56 : 67,112.67 = 38,402.13 : x
  2. Step 2: Convert to fraction form
    48,643.56/67,112.67 = 38,402.13/x
  3. Step 3: Cross multiply
    48,643.56x = 67,112.67 × 38,402.13
  4. Step 4: Simplify right side
    48,643.56x = 2,577,269,477.99
  5. Step 5: Solve for x
    x = 2,577,269,477.99/48,643.56
  6. Step 6: Final answer
    x = 52,982.75

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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.