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Finding the Fourth Proportional to 360,768.48, 540,998.88 and 124,135.20

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Solution

The fourth proportional to 360,768.48, 540,998.88 and 124,135.20 is: 186,149.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    360,768.48 : 540,998.88 = 124,135.20 : x
  2. Step 2: Convert to fraction form
    360,768.48/540,998.88 = 124,135.20/x
  3. Step 3: Cross multiply
    360,768.48x = 540,998.88 × 124,135.20
  4. Step 4: Simplify right side
    360,768.48x = 67,157,004,168.58
  5. Step 5: Solve for x
    x = 67,157,004,168.58/360,768.48
  6. Step 6: Final answer
    x = 186,149.87

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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.