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Finding the Fourth Proportional to 9,990.70, 14,967.60 and 5,832.70

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Solution

The fourth proportional to 9,990.70, 14,967.60 and 5,832.70 is: 8,738.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,990.70 : 14,967.60 = 5,832.70 : x
  2. Step 2: Convert to fraction form
    9,990.70/14,967.60 = 5,832.70/x
  3. Step 3: Cross multiply
    9,990.70x = 14,967.60 × 5,832.70
  4. Step 4: Simplify right side
    9,990.70x = 87,301,520.52
  5. Step 5: Solve for x
    x = 87,301,520.52/9,990.70
  6. Step 6: Final answer
    x = 8,738.28

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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.