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Finding the Fourth Proportional to 19,995.98, 29,984.16 and 11,678.10

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Solution

The fourth proportional to 19,995.98, 29,984.16 and 11,678.10 is: 17,511.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,995.98 : 29,984.16 = 11,678.10 : x
  2. Step 2: Convert to fraction form
    19,995.98/29,984.16 = 11,678.10/x
  3. Step 3: Cross multiply
    19,995.98x = 29,984.16 × 11,678.10
  4. Step 4: Simplify right side
    19,995.98x = 350,158,018.90
  5. Step 5: Solve for x
    x = 350,158,018.90/19,995.98
  6. Step 6: Final answer
    x = 17,511.42

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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.