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Finding the Fourth Proportional to 199,829.88, 275,888.22 and 128,335.90

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Solution

The fourth proportional to 199,829.88, 275,888.22 and 128,335.90 is: 177,182.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    199,829.88 : 275,888.22 = 128,335.90 : x
  2. Step 2: Convert to fraction form
    199,829.88/275,888.22 = 128,335.90/x
  3. Step 3: Cross multiply
    199,829.88x = 275,888.22 × 128,335.90
  4. Step 4: Simplify right side
    199,829.88x = 35,406,363,013.10
  5. Step 5: Solve for x
    x = 35,406,363,013.10/199,829.88
  6. Step 6: Final answer
    x = 177,182.53

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.