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Finding the Fourth Proportional to 40,894.65, 61,326.45 and 18,692.46

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Solution

The fourth proportional to 40,894.65, 61,326.45 and 18,692.46 is: 28,031.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,894.65 : 61,326.45 = 18,692.46 : x
  2. Step 2: Convert to fraction form
    40,894.65/61,326.45 = 18,692.46/x
  3. Step 3: Cross multiply
    40,894.65x = 61,326.45 × 18,692.46
  4. Step 4: Simplify right side
    40,894.65x = 1,146,342,213.57
  5. Step 5: Solve for x
    x = 1,146,342,213.57/40,894.65
  6. Step 6: Final answer
    x = 28,031.59

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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.