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Finding the Fourth Proportional to 9,629.20, 14,422.20 and 7,901.20

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Solution

The fourth proportional to 9,629.20, 14,422.20 and 7,901.20 is: 11,834.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,629.20 : 14,422.20 = 7,901.20 : x
  2. Step 2: Convert to fraction form
    9,629.20/14,422.20 = 7,901.20/x
  3. Step 3: Cross multiply
    9,629.20x = 14,422.20 × 7,901.20
  4. Step 4: Simplify right side
    9,629.20x = 113,952,686.64
  5. Step 5: Solve for x
    x = 113,952,686.64/9,629.20
  6. Step 6: Final answer
    x = 11,834.08

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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.