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Finding the Fourth Proportional to 19,709.65, 27,199.15 and 10,757.17

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Solution

The fourth proportional to 19,709.65, 27,199.15 and 10,757.17 is: 14,844.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,709.65 : 27,199.15 = 10,757.17 : x
  2. Step 2: Convert to fraction form
    19,709.65/27,199.15 = 10,757.17/x
  3. Step 3: Cross multiply
    19,709.65x = 27,199.15 × 10,757.17
  4. Step 4: Simplify right side
    19,709.65x = 292,585,880.41
  5. Step 5: Solve for x
    x = 292,585,880.41/19,709.65
  6. Step 6: Final answer
    x = 14,844.80

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.