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Finding the Fourth Proportional to 45,480.66, 62,734.74 and 31,308.90

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Solution

The fourth proportional to 45,480.66, 62,734.74 and 31,308.90 is: 43,186.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,480.66 : 62,734.74 = 31,308.90 : x
  2. Step 2: Convert to fraction form
    45,480.66/62,734.74 = 31,308.90/x
  3. Step 3: Cross multiply
    45,480.66x = 62,734.74 × 31,308.90
  4. Step 4: Simplify right side
    45,480.66x = 1,964,155,701.19
  5. Step 5: Solve for x
    x = 1,964,155,701.19/45,480.66
  6. Step 6: Final answer
    x = 43,186.61

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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.