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Finding the Fourth Proportional to 373,317.20, 560,048.70 and 148,639.40

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Solution

The fourth proportional to 373,317.20, 560,048.70 and 148,639.40 is: 222,988.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    373,317.20 : 560,048.70 = 148,639.40 : x
  2. Step 2: Convert to fraction form
    373,317.20/560,048.70 = 148,639.40/x
  3. Step 3: Cross multiply
    373,317.20x = 560,048.70 × 148,639.40
  4. Step 4: Simplify right side
    373,317.20x = 83,245,302,738.78
  5. Step 5: Solve for x
    x = 83,245,302,738.78/373,317.20
  6. Step 6: Final answer
    x = 222,988.13

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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.