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Finding the Fourth Proportional to 163,900.60, 245,715.90 and 73,949.20

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Solution

The fourth proportional to 163,900.60, 245,715.90 and 73,949.20 is: 110,862.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    163,900.60 : 245,715.90 = 73,949.20 : x
  2. Step 2: Convert to fraction form
    163,900.60/245,715.90 = 73,949.20/x
  3. Step 3: Cross multiply
    163,900.60x = 245,715.90 × 73,949.20
  4. Step 4: Simplify right side
    163,900.60x = 18,170,494,232.28
  5. Step 5: Solve for x
    x = 18,170,494,232.28/163,900.60
  6. Step 6: Final answer
    x = 110,862.89

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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.