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Finding the Fourth Proportional to 14,549.76, 20,078.55 and 8,262

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Solution

The fourth proportional to 14,549.76, 20,078.55 and 8,262 is: 11,401.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,549.76 : 20,078.55 = 8,262 : x
  2. Step 2: Convert to fraction form
    14,549.76/20,078.55 = 8,262/x
  3. Step 3: Cross multiply
    14,549.76x = 20,078.55 × 8,262
  4. Step 4: Simplify right side
    14,549.76x = 165,888,980.10
  5. Step 5: Solve for x
    x = 165,888,980.10/14,549.76
  6. Step 6: Final answer
    x = 11,401.49

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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.