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Finding the Fourth Proportional to 19,769.60, 27,625.60 and 19,769.60

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Solution

The fourth proportional to 19,769.60, 27,625.60 and 19,769.60 is: 27,625.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,769.60 : 27,625.60 = 19,769.60 : x
  2. Step 2: Convert to fraction form
    19,769.60/27,625.60 = 19,769.60/x
  3. Step 3: Cross multiply
    19,769.60x = 27,625.60 × 19,769.60
  4. Step 4: Simplify right side
    19,769.60x = 546,147,061.76
  5. Step 5: Solve for x
    x = 546,147,061.76/19,769.60
  6. Step 6: Final answer
    x = 27,625.60

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.