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Finding the Fourth Proportional to 11,860.93, 17,785.59 and 6,931.81

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Solution

The fourth proportional to 11,860.93, 17,785.59 and 6,931.81 is: 10,394.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,860.93 : 17,785.59 = 6,931.81 : x
  2. Step 2: Convert to fraction form
    11,860.93/17,785.59 = 6,931.81/x
  3. Step 3: Cross multiply
    11,860.93x = 17,785.59 × 6,931.81
  4. Step 4: Simplify right side
    11,860.93x = 123,286,330.62
  5. Step 5: Solve for x
    x = 123,286,330.62/11,860.93
  6. Step 6: Final answer
    x = 10,394.32

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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.