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Finding the Fourth Proportional to 19,365.71, 26,715.80 and 11,404.12

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Solution

The fourth proportional to 19,365.71, 26,715.80 and 11,404.12 is: 15,732.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,365.71 : 26,715.80 = 11,404.12 : x
  2. Step 2: Convert to fraction form
    19,365.71/26,715.80 = 11,404.12/x
  3. Step 3: Cross multiply
    19,365.71x = 26,715.80 × 11,404.12
  4. Step 4: Simplify right side
    19,365.71x = 304,670,150.82
  5. Step 5: Solve for x
    x = 304,670,150.82/19,365.71
  6. Step 6: Final answer
    x = 15,732.46

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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.