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Finding the Fourth Proportional to 124,448.20, 186,745.20 and 45,570.40

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Solution

The fourth proportional to 124,448.20, 186,745.20 and 45,570.40 is: 68,382.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,448.20 : 186,745.20 = 45,570.40 : x
  2. Step 2: Convert to fraction form
    124,448.20/186,745.20 = 45,570.40/x
  3. Step 3: Cross multiply
    124,448.20x = 186,745.20 × 45,570.40
  4. Step 4: Simplify right side
    124,448.20x = 8,510,053,462.08
  5. Step 5: Solve for x
    x = 8,510,053,462.08/124,448.20
  6. Step 6: Final answer
    x = 68,382.29

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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.