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Finding the Fourth Proportional to 85,212.88, 127,819.68 and 26,048.32

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Solution

The fourth proportional to 85,212.88, 127,819.68 and 26,048.32 is: 39,072.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,212.88 : 127,819.68 = 26,048.32 : x
  2. Step 2: Convert to fraction form
    85,212.88/127,819.68 = 26,048.32/x
  3. Step 3: Cross multiply
    85,212.88x = 127,819.68 × 26,048.32
  4. Step 4: Simplify right side
    85,212.88x = 3,329,487,926.94
  5. Step 5: Solve for x
    x = 3,329,487,926.94/85,212.88
  6. Step 6: Final answer
    x = 39,072.59

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1.5x scale

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.