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Finding the Fourth Proportional to 15,076.40, 20,812.57 and 10,049.00

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Solution

The fourth proportional to 15,076.40, 20,812.57 and 10,049.00 is: 13,872.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,076.40 : 20,812.57 = 10,049.00 : x
  2. Step 2: Convert to fraction form
    15,076.40/20,812.57 = 10,049.00/x
  3. Step 3: Cross multiply
    15,076.40x = 20,812.57 × 10,049.00
  4. Step 4: Simplify right side
    15,076.40x = 209,145,386.74
  5. Step 5: Solve for x
    x = 209,145,386.74/15,076.40
  6. Step 6: Final answer
    x = 13,872.37

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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.