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Finding the Fourth Proportional to 14,667.40, 21,950.70 and 8,828.20

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Solution

The fourth proportional to 14,667.40, 21,950.70 and 8,828.20 is: 13,211.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,667.40 : 21,950.70 = 8,828.20 : x
  2. Step 2: Convert to fraction form
    14,667.40/21,950.70 = 8,828.20/x
  3. Step 3: Cross multiply
    14,667.40x = 21,950.70 × 8,828.20
  4. Step 4: Simplify right side
    14,667.40x = 193,785,169.74
  5. Step 5: Solve for x
    x = 193,785,169.74/14,667.40
  6. Step 6: Final answer
    x = 13,211.96

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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.