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Finding the Fourth Proportional to 5,758.12, 7,946.61 and 3,240.47

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Solution

The fourth proportional to 5,758.12, 7,946.61 and 3,240.47 is: 4,472.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,758.12 : 7,946.61 = 3,240.47 : x
  2. Step 2: Convert to fraction form
    5,758.12/7,946.61 = 3,240.47/x
  3. Step 3: Cross multiply
    5,758.12x = 7,946.61 × 3,240.47
  4. Step 4: Simplify right side
    5,758.12x = 25,750,792.15
  5. Step 5: Solve for x
    x = 25,750,792.15/5,758.12
  6. Step 6: Final answer
    x = 4,472.08

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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.