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Finding the Fourth Proportional to 74,867.64, 112,324.47 and 44,915.12

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Solution

The fourth proportional to 74,867.64, 112,324.47 and 44,915.12 is: 67,386.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,867.64 : 112,324.47 = 44,915.12 : x
  2. Step 2: Convert to fraction form
    74,867.64/112,324.47 = 44,915.12/x
  3. Step 3: Cross multiply
    74,867.64x = 112,324.47 × 44,915.12
  4. Step 4: Simplify right side
    74,867.64x = 5,045,067,048.99
  5. Step 5: Solve for x
    x = 5,045,067,048.99/74,867.64
  6. Step 6: Final answer
    x = 67,386.48

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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.