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Finding the Fourth Proportional to 4,079.30, 5,718.70 and 4,079.30

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Solution

The fourth proportional to 4,079.30, 5,718.70 and 4,079.30 is: 5,718.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,079.30 : 5,718.70 = 4,079.30 : x
  2. Step 2: Convert to fraction form
    4,079.30/5,718.70 = 4,079.30/x
  3. Step 3: Cross multiply
    4,079.30x = 5,718.70 × 4,079.30
  4. Step 4: Simplify right side
    4,079.30x = 23,328,292.91
  5. Step 5: Solve for x
    x = 23,328,292.91/4,079.30
  6. Step 6: Final answer
    x = 5,718.70

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.