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Finding the Fourth Proportional to 19,699.62, 29,554.29 and 18,079.62

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Solution

The fourth proportional to 19,699.62, 29,554.29 and 18,079.62 is: 27,123.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,699.62 : 29,554.29 = 18,079.62 : x
  2. Step 2: Convert to fraction form
    19,699.62/29,554.29 = 18,079.62/x
  3. Step 3: Cross multiply
    19,699.62x = 29,554.29 × 18,079.62
  4. Step 4: Simplify right side
    19,699.62x = 534,330,332.57
  5. Step 5: Solve for x
    x = 534,330,332.57/19,699.62
  6. Step 6: Final answer
    x = 27,123.89

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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.