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Finding the Fourth Proportional to 14,207.18, 19,605.93 and 7,919.42

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Solution

The fourth proportional to 14,207.18, 19,605.93 and 7,919.42 is: 10,928.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,207.18 : 19,605.93 = 7,919.42 : x
  2. Step 2: Convert to fraction form
    14,207.18/19,605.93 = 7,919.42/x
  3. Step 3: Cross multiply
    14,207.18x = 19,605.93 × 7,919.42
  4. Step 4: Simplify right side
    14,207.18x = 155,267,594.16
  5. Step 5: Solve for x
    x = 155,267,594.16/14,207.18
  6. Step 6: Final answer
    x = 10,928.81

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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.