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Finding the Fourth Proportional to 74,874.72, 103,325.52 and 49,350.24

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Solution

The fourth proportional to 74,874.72, 103,325.52 and 49,350.24 is: 68,102.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,874.72 : 103,325.52 = 49,350.24 : x
  2. Step 2: Convert to fraction form
    74,874.72/103,325.52 = 49,350.24/x
  3. Step 3: Cross multiply
    74,874.72x = 103,325.52 × 49,350.24
  4. Step 4: Simplify right side
    74,874.72x = 5,099,139,210.12
  5. Step 5: Solve for x
    x = 5,099,139,210.12/74,874.72
  6. Step 6: Final answer
    x = 68,102.28

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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.