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Finding the Fourth Proportional to 75,228.39, 103,815.18 and 45,014.97

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Solution

The fourth proportional to 75,228.39, 103,815.18 and 45,014.97 is: 62,120.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,228.39 : 103,815.18 = 45,014.97 : x
  2. Step 2: Convert to fraction form
    75,228.39/103,815.18 = 45,014.97/x
  3. Step 3: Cross multiply
    75,228.39x = 103,815.18 × 45,014.97
  4. Step 4: Simplify right side
    75,228.39x = 4,673,237,213.24
  5. Step 5: Solve for x
    x = 4,673,237,213.24/75,228.39
  6. Step 6: Final answer
    x = 62,120.66

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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.