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Finding the Fourth Proportional to 403,019.67, 556,167.11 and 221,727.71

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Solution

The fourth proportional to 403,019.67, 556,167.11 and 221,727.71 is: 305,984.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    403,019.67 : 556,167.11 = 221,727.71 : x
  2. Step 2: Convert to fraction form
    403,019.67/556,167.11 = 221,727.71/x
  3. Step 3: Cross multiply
    403,019.67x = 556,167.11 × 221,727.71
  4. Step 4: Simplify right side
    403,019.67x = 123,317,656,896.78
  5. Step 5: Solve for x
    x = 123,317,656,896.78/403,019.67
  6. Step 6: Final answer
    x = 305,984.21

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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.