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Finding the Fourth Proportional to 178,218.61, 267,745.95 and 168,130.87

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Solution

The fourth proportional to 178,218.61, 267,745.95 and 168,130.87 is: 252,590.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    178,218.61 : 267,745.95 = 168,130.87 : x
  2. Step 2: Convert to fraction form
    178,218.61/267,745.95 = 168,130.87/x
  3. Step 3: Cross multiply
    178,218.61x = 267,745.95 × 168,130.87
  4. Step 4: Simplify right side
    178,218.61x = 45,016,359,512.48
  5. Step 5: Solve for x
    x = 45,016,359,512.48/178,218.61
  6. Step 6: Final answer
    x = 252,590.68

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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.