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Finding the Fourth Proportional to 9,963.60, 14,945.40 and 7,371.60

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Solution

The fourth proportional to 9,963.60, 14,945.40 and 7,371.60 is: 11,057.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,963.60 : 14,945.40 = 7,371.60 : x
  2. Step 2: Convert to fraction form
    9,963.60/14,945.40 = 7,371.60/x
  3. Step 3: Cross multiply
    9,963.60x = 14,945.40 × 7,371.60
  4. Step 4: Simplify right side
    9,963.60x = 110,171,510.64
  5. Step 5: Solve for x
    x = 110,171,510.64/9,963.60
  6. Step 6: Final answer
    x = 11,057.40

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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.