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Finding the Fourth Proportional to 61,275.30, 91,919.34 and 16,902.06

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Solution

The fourth proportional to 61,275.30, 91,919.34 and 16,902.06 is: 25,354.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,275.30 : 91,919.34 = 16,902.06 : x
  2. Step 2: Convert to fraction form
    61,275.30/91,919.34 = 16,902.06/x
  3. Step 3: Cross multiply
    61,275.30x = 91,919.34 × 16,902.06
  4. Step 4: Simplify right side
    61,275.30x = 1,553,626,199.84
  5. Step 5: Solve for x
    x = 1,553,626,199.84/61,275.30
  6. Step 6: Final answer
    x = 25,354.85

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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.