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Finding the Fourth Proportional to 9,279.72, 13,923.90 and 9,029.16

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Solution

The fourth proportional to 9,279.72, 13,923.90 and 9,029.16 is: 13,547.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,279.72 : 13,923.90 = 9,029.16 : x
  2. Step 2: Convert to fraction form
    9,279.72/13,923.90 = 9,029.16/x
  3. Step 3: Cross multiply
    9,279.72x = 13,923.90 × 9,029.16
  4. Step 4: Simplify right side
    9,279.72x = 125,721,120.92
  5. Step 5: Solve for x
    x = 125,721,120.92/9,279.72
  6. Step 6: Final answer
    x = 13,547.94

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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.