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Finding the Fourth Proportional to 64,549.31, 89,078.13 and 36,255.20

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Solution

The fourth proportional to 64,549.31, 89,078.13 and 36,255.20 is: 50,032.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,549.31 : 89,078.13 = 36,255.20 : x
  2. Step 2: Convert to fraction form
    64,549.31/89,078.13 = 36,255.20/x
  3. Step 3: Cross multiply
    64,549.31x = 89,078.13 × 36,255.20
  4. Step 4: Simplify right side
    64,549.31x = 3,229,544,973.39
  5. Step 5: Solve for x
    x = 3,229,544,973.39/64,549.31
  6. Step 6: Final answer
    x = 50,032.22

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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.