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Finding the Fourth Proportional to 15,909.84, 23,865.18 and 8,885.94

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Solution

The fourth proportional to 15,909.84, 23,865.18 and 8,885.94 is: 13,329.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,909.84 : 23,865.18 = 8,885.94 : x
  2. Step 2: Convert to fraction form
    15,909.84/23,865.18 = 8,885.94/x
  3. Step 3: Cross multiply
    15,909.84x = 23,865.18 × 8,885.94
  4. Step 4: Simplify right side
    15,909.84x = 212,064,557.57
  5. Step 5: Solve for x
    x = 212,064,557.57/15,909.84
  6. Step 6: Final answer
    x = 13,329.14

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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.