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Finding the Fourth Proportional to 13,037.76, 17,990.10 and 8,563.32

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Solution

The fourth proportional to 13,037.76, 17,990.10 and 8,563.32 is: 11,816.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,037.76 : 17,990.10 = 8,563.32 : x
  2. Step 2: Convert to fraction form
    13,037.76/17,990.10 = 8,563.32/x
  3. Step 3: Cross multiply
    13,037.76x = 17,990.10 × 8,563.32
  4. Step 4: Simplify right side
    13,037.76x = 154,054,983.13
  5. Step 5: Solve for x
    x = 154,054,983.13/13,037.76
  6. Step 6: Final answer
    x = 11,816.06

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.