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Finding the Fourth Proportional to 9,958.70, 14,947.28 and 5,031.80

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Solution

The fourth proportional to 9,958.70, 14,947.28 and 5,031.80 is: 7,552.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,958.70 : 14,947.28 = 5,031.80 : x
  2. Step 2: Convert to fraction form
    9,958.70/14,947.28 = 5,031.80/x
  3. Step 3: Cross multiply
    9,958.70x = 14,947.28 × 5,031.80
  4. Step 4: Simplify right side
    9,958.70x = 75,211,661.35
  5. Step 5: Solve for x
    x = 75,211,661.35/9,958.70
  6. Step 6: Final answer
    x = 7,552.36

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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.