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Finding the Fourth Proportional to 14,660.88, 21,981.54 and 7,549.74

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Solution

The fourth proportional to 14,660.88, 21,981.54 and 7,549.74 is: 11,319.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,660.88 : 21,981.54 = 7,549.74 : x
  2. Step 2: Convert to fraction form
    14,660.88/21,981.54 = 7,549.74/x
  3. Step 3: Cross multiply
    14,660.88x = 21,981.54 × 7,549.74
  4. Step 4: Simplify right side
    14,660.88x = 165,954,911.80
  5. Step 5: Solve for x
    x = 165,954,911.80/14,660.88
  6. Step 6: Final answer
    x = 11,319.57

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1.5x scale

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.