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Finding the Fourth Proportional to 9,521.68, 14,281.72 and 3,281.68

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Solution

The fourth proportional to 9,521.68, 14,281.72 and 3,281.68 is: 4,922.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,521.68 : 14,281.72 = 3,281.68 : x
  2. Step 2: Convert to fraction form
    9,521.68/14,281.72 = 3,281.68/x
  3. Step 3: Cross multiply
    9,521.68x = 14,281.72 × 3,281.68
  4. Step 4: Simplify right side
    9,521.68x = 46,868,034.89
  5. Step 5: Solve for x
    x = 46,868,034.89/9,521.68
  6. Step 6: Final answer
    x = 4,922.24

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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.