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Finding the Fourth Proportional to 145,874.20, 218,811.30 and 124,004.20

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Solution

The fourth proportional to 145,874.20, 218,811.30 and 124,004.20 is: 186,006.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,874.20 : 218,811.30 = 124,004.20 : x
  2. Step 2: Convert to fraction form
    145,874.20/218,811.30 = 124,004.20/x
  3. Step 3: Cross multiply
    145,874.20x = 218,811.30 × 124,004.20
  4. Step 4: Simplify right side
    145,874.20x = 27,133,520,207.46
  5. Step 5: Solve for x
    x = 27,133,520,207.46/145,874.20
  6. Step 6: Final answer
    x = 186,006.30

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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.