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Finding the Fourth Proportional to 14,176.60, 21,264.90 and 7,955.80

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Solution

The fourth proportional to 14,176.60, 21,264.90 and 7,955.80 is: 11,933.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,176.60 : 21,264.90 = 7,955.80 : x
  2. Step 2: Convert to fraction form
    14,176.60/21,264.90 = 7,955.80/x
  3. Step 3: Cross multiply
    14,176.60x = 21,264.90 × 7,955.80
  4. Step 4: Simplify right side
    14,176.60x = 169,179,291.42
  5. Step 5: Solve for x
    x = 169,179,291.42/14,176.60
  6. Step 6: Final answer
    x = 11,933.70

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Similar ratio
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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.