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Finding the Fourth Proportional to 40,419.70, 60,629.55 and 36,045.70

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Solution

The fourth proportional to 40,419.70, 60,629.55 and 36,045.70 is: 54,068.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,419.70 : 60,629.55 = 36,045.70 : x
  2. Step 2: Convert to fraction form
    40,419.70/60,629.55 = 36,045.70/x
  3. Step 3: Cross multiply
    40,419.70x = 60,629.55 × 36,045.70
  4. Step 4: Simplify right side
    40,419.70x = 2,185,434,570.44
  5. Step 5: Solve for x
    x = 2,185,434,570.44/40,419.70
  6. Step 6: Final answer
    x = 54,068.55

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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.