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Finding the Fourth Proportional to 123,690.25, 185,419.94 and 48,811.01

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Solution

The fourth proportional to 123,690.25, 185,419.94 and 48,811.01 is: 73,170.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,690.25 : 185,419.94 = 48,811.01 : x
  2. Step 2: Convert to fraction form
    123,690.25/185,419.94 = 48,811.01/x
  3. Step 3: Cross multiply
    123,690.25x = 185,419.94 × 48,811.01
  4. Step 4: Simplify right side
    123,690.25x = 9,050,534,545.54
  5. Step 5: Solve for x
    x = 9,050,534,545.54/123,690.25
  6. Step 6: Final answer
    x = 73,170.96

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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.