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Finding the Fourth Proportional to 124,530.20, 186,843.90 and 45,652.40

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Solution

The fourth proportional to 124,530.20, 186,843.90 and 45,652.40 is: 68,496.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,530.20 : 186,843.90 = 45,652.40 : x
  2. Step 2: Convert to fraction form
    124,530.20/186,843.90 = 45,652.40/x
  3. Step 3: Cross multiply
    124,530.20x = 186,843.90 × 45,652.40
  4. Step 4: Simplify right side
    124,530.20x = 8,529,872,460.36
  5. Step 5: Solve for x
    x = 8,529,872,460.36/124,530.20
  6. Step 6: Final answer
    x = 68,496.42

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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.