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Finding the Fourth Proportional to 14,221.16, 19,625.76 and 7,933.96

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Solution

The fourth proportional to 14,221.16, 19,625.76 and 7,933.96 is: 10,949.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,221.16 : 19,625.76 = 7,933.96 : x
  2. Step 2: Convert to fraction form
    14,221.16/19,625.76 = 7,933.96/x
  3. Step 3: Cross multiply
    14,221.16x = 19,625.76 × 7,933.96
  4. Step 4: Simplify right side
    14,221.16x = 155,709,994.81
  5. Step 5: Solve for x
    x = 155,709,994.81/14,221.16
  6. Step 6: Final answer
    x = 10,949.18

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1.5x scale

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.