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Finding the Fourth Proportional to 105,915.98, 158,873.85 and 27,030.20

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Solution

The fourth proportional to 105,915.98, 158,873.85 and 27,030.20 is: 40,545.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,915.98 : 158,873.85 = 27,030.20 : x
  2. Step 2: Convert to fraction form
    105,915.98/158,873.85 = 27,030.20/x
  3. Step 3: Cross multiply
    105,915.98x = 158,873.85 × 27,030.20
  4. Step 4: Simplify right side
    105,915.98x = 4,294,391,145.90
  5. Step 5: Solve for x
    x = 4,294,391,145.90/105,915.98
  6. Step 6: Final answer
    x = 40,545.26

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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.