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Finding the Fourth Proportional to 9,761.84, 14,646.60 and 4,286

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Solution

The fourth proportional to 9,761.84, 14,646.60 and 4,286 is: 6,430.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,761.84 : 14,646.60 = 4,286 : x
  2. Step 2: Convert to fraction form
    9,761.84/14,646.60 = 4,286/x
  3. Step 3: Cross multiply
    9,761.84x = 14,646.60 × 4,286
  4. Step 4: Simplify right side
    9,761.84x = 62,775,327.60
  5. Step 5: Solve for x
    x = 62,775,327.60/9,761.84
  6. Step 6: Final answer
    x = 6,430.69

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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.