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Finding the Fourth Proportional to 9,585.84, 13,228.92 and 5,394

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Solution

The fourth proportional to 9,585.84, 13,228.92 and 5,394 is: 7,443.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,585.84 : 13,228.92 = 5,394 : x
  2. Step 2: Convert to fraction form
    9,585.84/13,228.92 = 5,394/x
  3. Step 3: Cross multiply
    9,585.84x = 13,228.92 × 5,394
  4. Step 4: Simplify right side
    9,585.84x = 71,356,794.48
  5. Step 5: Solve for x
    x = 71,356,794.48/9,585.84
  6. Step 6: Final answer
    x = 7,443.98

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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.