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Finding the Fourth Proportional to 74,981.92, 103,489.44 and 48,158.32

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Solution

The fourth proportional to 74,981.92, 103,489.44 and 48,158.32 is: 66,467.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,981.92 : 103,489.44 = 48,158.32 : x
  2. Step 2: Convert to fraction form
    74,981.92/103,489.44 = 48,158.32/x
  3. Step 3: Cross multiply
    74,981.92x = 103,489.44 × 48,158.32
  4. Step 4: Simplify right side
    74,981.92x = 4,983,877,568.14
  5. Step 5: Solve for x
    x = 4,983,877,568.14/74,981.92
  6. Step 6: Final answer
    x = 66,467.72

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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.