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Finding the Fourth Proportional to 56,736.60, 85,104.90 and 38,074.20

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Solution

The fourth proportional to 56,736.60, 85,104.90 and 38,074.20 is: 57,111.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,736.60 : 85,104.90 = 38,074.20 : x
  2. Step 2: Convert to fraction form
    56,736.60/85,104.90 = 38,074.20/x
  3. Step 3: Cross multiply
    56,736.60x = 85,104.90 × 38,074.20
  4. Step 4: Simplify right side
    56,736.60x = 3,240,300,983.58
  5. Step 5: Solve for x
    x = 3,240,300,983.58/56,736.60
  6. Step 6: Final answer
    x = 57,111.30

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.