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Finding the Fourth Proportional to 19,809.98, 29,713.48 and 7,324.17

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Solution

The fourth proportional to 19,809.98, 29,713.48 and 7,324.17 is: 10,985.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,809.98 : 29,713.48 = 7,324.17 : x
  2. Step 2: Convert to fraction form
    19,809.98/29,713.48 = 7,324.17/x
  3. Step 3: Cross multiply
    19,809.98x = 29,713.48 × 7,324.17
  4. Step 4: Simplify right side
    19,809.98x = 217,626,560.50
  5. Step 5: Solve for x
    x = 217,626,560.50/19,809.98
  6. Step 6: Final answer
    x = 10,985.70

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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.