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Finding the Fourth Proportional to 74,886.72, 103,343.04 and 41,352

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Solution

The fourth proportional to 74,886.72, 103,343.04 and 41,352 is: 57,065.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,886.72 : 103,343.04 = 41,352 : x
  2. Step 2: Convert to fraction form
    74,886.72/103,343.04 = 41,352/x
  3. Step 3: Cross multiply
    74,886.72x = 103,343.04 × 41,352
  4. Step 4: Simplify right side
    74,886.72x = 4,273,441,390.08
  5. Step 5: Solve for x
    x = 4,273,441,390.08/74,886.72
  6. Step 6: Final answer
    x = 57,065.41

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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.