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Finding the Fourth Proportional to 9,279.70, 12,805.96 and 5,088.22

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Solution

The fourth proportional to 9,279.70, 12,805.96 and 5,088.22 is: 7,021.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,279.70 : 12,805.96 = 5,088.22 : x
  2. Step 2: Convert to fraction form
    9,279.70/12,805.96 = 5,088.22/x
  3. Step 3: Cross multiply
    9,279.70x = 12,805.96 × 5,088.22
  4. Step 4: Simplify right side
    9,279.70x = 65,159,541.79
  5. Step 5: Solve for x
    x = 65,159,541.79/9,279.70
  6. Step 6: Final answer
    x = 7,021.73

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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.