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Finding the Fourth Proportional to 19,053.18, 28,578.69 and 5,905.14

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Solution

The fourth proportional to 19,053.18, 28,578.69 and 5,905.14 is: 8,857.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,053.18 : 28,578.69 = 5,905.14 : x
  2. Step 2: Convert to fraction form
    19,053.18/28,578.69 = 5,905.14/x
  3. Step 3: Cross multiply
    19,053.18x = 28,578.69 × 5,905.14
  4. Step 4: Simplify right side
    19,053.18x = 168,761,165.47
  5. Step 5: Solve for x
    x = 168,761,165.47/19,053.18
  6. Step 6: Final answer
    x = 8,857.38

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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.