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Finding the Fourth Proportional to 154,522.98, 213,268.41 and 87,454.98

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Solution

The fourth proportional to 154,522.98, 213,268.41 and 87,454.98 is: 120,702.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,522.98 : 213,268.41 = 87,454.98 : x
  2. Step 2: Convert to fraction form
    154,522.98/213,268.41 = 87,454.98/x
  3. Step 3: Cross multiply
    154,522.98x = 213,268.41 × 87,454.98
  4. Step 4: Simplify right side
    154,522.98x = 18,651,384,531.18
  5. Step 5: Solve for x
    x = 18,651,384,531.18/154,522.98
  6. Step 6: Final answer
    x = 120,702.98

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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.