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Finding the Fourth Proportional to 74,820.60, 112,175.10 and 45,232.20

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Solution

The fourth proportional to 74,820.60, 112,175.10 and 45,232.20 is: 67,814.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,820.60 : 112,175.10 = 45,232.20 : x
  2. Step 2: Convert to fraction form
    74,820.60/112,175.10 = 45,232.20/x
  3. Step 3: Cross multiply
    74,820.60x = 112,175.10 × 45,232.20
  4. Step 4: Simplify right side
    74,820.60x = 5,073,926,558.22
  5. Step 5: Solve for x
    x = 5,073,926,558.22/74,820.60
  6. Step 6: Final answer
    x = 67,814.57

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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.