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Finding the Fourth Proportional to 199,385.34, 275,082.90 and 127,804.86

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Solution

The fourth proportional to 199,385.34, 275,082.90 and 127,804.86 is: 176,326.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    199,385.34 : 275,082.90 = 127,804.86 : x
  2. Step 2: Convert to fraction form
    199,385.34/275,082.90 = 127,804.86/x
  3. Step 3: Cross multiply
    199,385.34x = 275,082.90 × 127,804.86
  4. Step 4: Simplify right side
    199,385.34x = 35,156,931,522.89
  5. Step 5: Solve for x
    x = 35,156,931,522.89/199,385.34
  6. Step 6: Final answer
    x = 176,326.56

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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.