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Finding the Fourth Proportional to 178,479.41, 267,632.99 and 103,618.40

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Solution

The fourth proportional to 178,479.41, 267,632.99 and 103,618.40 is: 155,377.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    178,479.41 : 267,632.99 = 103,618.40 : x
  2. Step 2: Convert to fraction form
    178,479.41/267,632.99 = 103,618.40/x
  3. Step 3: Cross multiply
    178,479.41x = 267,632.99 × 103,618.40
  4. Step 4: Simplify right side
    178,479.41x = 27,731,702,211.02
  5. Step 5: Solve for x
    x = 27,731,702,211.02/178,479.41
  6. Step 6: Final answer
    x = 155,377.60

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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.