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Finding the Fourth Proportional to 358,661.10, 538,116.19 and 159,121.60

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Solution

The fourth proportional to 358,661.10, 538,116.19 and 159,121.60 is: 238,737.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    358,661.10 : 538,116.19 = 159,121.60 : x
  2. Step 2: Convert to fraction form
    358,661.10/538,116.19 = 159,121.60/x
  3. Step 3: Cross multiply
    358,661.10x = 538,116.19 × 159,121.60
  4. Step 4: Simplify right side
    358,661.10x = 85,625,908,290.67
  5. Step 5: Solve for x
    x = 85,625,908,290.67/358,661.10
  6. Step 6: Final answer
    x = 238,737.65

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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.