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Finding the Fourth Proportional to 9,623.20, 13,772.12 and 9,623.20

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Solution

The fourth proportional to 9,623.20, 13,772.12 and 9,623.20 is: 13,772.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,623.20 : 13,772.12 = 9,623.20 : x
  2. Step 2: Convert to fraction form
    9,623.20/13,772.12 = 9,623.20/x
  3. Step 3: Cross multiply
    9,623.20x = 13,772.12 × 9,623.20
  4. Step 4: Simplify right side
    9,623.20x = 132,531,865.18
  5. Step 5: Solve for x
    x = 132,531,865.18/9,623.20
  6. Step 6: Final answer
    x = 13,772.12

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.43) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.