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Finding the Fourth Proportional to 14,017.81, 19,344.09 and 7,730.14

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Solution

The fourth proportional to 14,017.81, 19,344.09 and 7,730.14 is: 10,667.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,017.81 : 19,344.09 = 7,730.14 : x
  2. Step 2: Convert to fraction form
    14,017.81/19,344.09 = 7,730.14/x
  3. Step 3: Cross multiply
    14,017.81x = 19,344.09 × 7,730.14
  4. Step 4: Simplify right side
    14,017.81x = 149,532,523.87
  5. Step 5: Solve for x
    x = 149,532,523.87/14,017.81
  6. Step 6: Final answer
    x = 10,667.32

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Double scale
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Similar ratio
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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.