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Finding the Fourth Proportional to 15,195.70, 21,040.05 and 14,029.30

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Solution

The fourth proportional to 15,195.70, 21,040.05 and 14,029.30 is: 19,425.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,195.70 : 21,040.05 = 14,029.30 : x
  2. Step 2: Convert to fraction form
    15,195.70/21,040.05 = 14,029.30/x
  3. Step 3: Cross multiply
    15,195.70x = 21,040.05 × 14,029.30
  4. Step 4: Simplify right side
    15,195.70x = 295,177,173.47
  5. Step 5: Solve for x
    x = 295,177,173.47/15,195.70
  6. Step 6: Final answer
    x = 19,425.05

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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.