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Finding the Fourth Proportional to 10,661.10, 15,991.65 and 5,733.06

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Solution

The fourth proportional to 10,661.10, 15,991.65 and 5,733.06 is: 8,599.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,661.10 : 15,991.65 = 5,733.06 : x
  2. Step 2: Convert to fraction form
    10,661.10/15,991.65 = 5,733.06/x
  3. Step 3: Cross multiply
    10,661.10x = 15,991.65 × 5,733.06
  4. Step 4: Simplify right side
    10,661.10x = 91,681,088.95
  5. Step 5: Solve for x
    x = 91,681,088.95/10,661.10
  6. Step 6: Final answer
    x = 8,599.59

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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.