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Finding the Fourth Proportional to 272,161.69, 408,248.13 and 99,047.49

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Solution

The fourth proportional to 272,161.69, 408,248.13 and 99,047.49 is: 148,573.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    272,161.69 : 408,248.13 = 99,047.49 : x
  2. Step 2: Convert to fraction form
    272,161.69/408,248.13 = 99,047.49/x
  3. Step 3: Cross multiply
    272,161.69x = 408,248.13 × 99,047.49
  4. Step 4: Simplify right side
    272,161.69x = 40,435,953,710.59
  5. Step 5: Solve for x
    x = 40,435,953,710.59/272,161.69
  6. Step 6: Final answer
    x = 148,573.28

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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.