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Finding the Fourth Proportional to 15,983.60, 23,983.61 and 7,105.02

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Solution

The fourth proportional to 15,983.60, 23,983.61 and 7,105.02 is: 10,661.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,983.60 : 23,983.61 = 7,105.02 : x
  2. Step 2: Convert to fraction form
    15,983.60/23,983.61 = 7,105.02/x
  3. Step 3: Cross multiply
    15,983.60x = 23,983.61 × 7,105.02
  4. Step 4: Simplify right side
    15,983.60x = 170,403,993.20
  5. Step 5: Solve for x
    x = 170,403,993.20/15,983.60
  6. Step 6: Final answer
    x = 10,661.18

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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.