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Finding the Fourth Proportional to 5,291.47, 7,934.91 and 2,825.74

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Solution

The fourth proportional to 5,291.47, 7,934.91 and 2,825.74 is: 4,237.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,291.47 : 7,934.91 = 2,825.74 : x
  2. Step 2: Convert to fraction form
    5,291.47/7,934.91 = 2,825.74/x
  3. Step 3: Cross multiply
    5,291.47x = 7,934.91 × 2,825.74
  4. Step 4: Simplify right side
    5,291.47x = 22,421,992.58
  5. Step 5: Solve for x
    x = 22,421,992.58/5,291.47
  6. Step 6: Final answer
    x = 4,237.38

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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.