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Finding the Fourth Proportional to 178,658.84, 267,637.88 and 103,621.34

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Solution

The fourth proportional to 178,658.84, 267,637.88 and 103,621.34 is: 155,228.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    178,658.84 : 267,637.88 = 103,621.34 : x
  2. Step 2: Convert to fraction form
    178,658.84/267,637.88 = 103,621.34/x
  3. Step 3: Cross multiply
    178,658.84x = 267,637.88 × 103,621.34
  4. Step 4: Simplify right side
    178,658.84x = 27,732,993,904.06
  5. Step 5: Solve for x
    x = 27,732,993,904.06/178,658.84
  6. Step 6: Final answer
    x = 155,228.79

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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.