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Finding the Fourth Proportional to 19,067.31, 28,602.05 and 6,411.99

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Solution

The fourth proportional to 19,067.31, 28,602.05 and 6,411.99 is: 9,618.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,067.31 : 28,602.05 = 6,411.99 : x
  2. Step 2: Convert to fraction form
    19,067.31/28,602.05 = 6,411.99/x
  3. Step 3: Cross multiply
    19,067.31x = 28,602.05 × 6,411.99
  4. Step 4: Simplify right side
    19,067.31x = 183,396,026.99
  5. Step 5: Solve for x
    x = 183,396,026.99/19,067.31
  6. Step 6: Final answer
    x = 9,618.35

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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.