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Finding the Fourth Proportional to 19,063.97, 28,595.96 and 5,212.97

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Solution

The fourth proportional to 19,063.97, 28,595.96 and 5,212.97 is: 7,819.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,063.97 : 28,595.96 = 5,212.97 : x
  2. Step 2: Convert to fraction form
    19,063.97/28,595.96 = 5,212.97/x
  3. Step 3: Cross multiply
    19,063.97x = 28,595.96 × 5,212.97
  4. Step 4: Simplify right side
    19,063.97x = 149,069,839.34
  5. Step 5: Solve for x
    x = 149,069,839.34/19,063.97
  6. Step 6: Final answer
    x = 7,819.45

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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.