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Finding the Fourth Proportional to 453,144.74, 679,672.95 and 137,604.38

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Solution

The fourth proportional to 453,144.74, 679,672.95 and 137,604.38 is: 206,393.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    453,144.74 : 679,672.95 = 137,604.38 : x
  2. Step 2: Convert to fraction form
    453,144.74/679,672.95 = 137,604.38/x
  3. Step 3: Cross multiply
    453,144.74x = 679,672.95 × 137,604.38
  4. Step 4: Simplify right side
    453,144.74x = 93,525,974,887.52
  5. Step 5: Solve for x
    x = 93,525,974,887.52/453,144.74
  6. Step 6: Final answer
    x = 206,393.16

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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.