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Finding the Fourth Proportional to 267,251.76, 368,838.48 and 154,078.56

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Solution

The fourth proportional to 267,251.76, 368,838.48 and 154,078.56 is: 212,646.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    267,251.76 : 368,838.48 = 154,078.56 : x
  2. Step 2: Convert to fraction form
    267,251.76/368,838.48 = 154,078.56/x
  3. Step 3: Cross multiply
    267,251.76x = 368,838.48 × 154,078.56
  4. Step 4: Simplify right side
    267,251.76x = 56,830,101,870.99
  5. Step 5: Solve for x
    x = 56,830,101,870.99/267,251.76
  6. Step 6: Final answer
    x = 212,646.31

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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.