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Finding the Fourth Proportional to 19,818.36, 29,723.76 and 9,954.90

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Solution

The fourth proportional to 19,818.36, 29,723.76 and 9,954.90 is: 14,930.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,818.36 : 29,723.76 = 9,954.90 : x
  2. Step 2: Convert to fraction form
    19,818.36/29,723.76 = 9,954.90/x
  3. Step 3: Cross multiply
    19,818.36x = 29,723.76 × 9,954.90
  4. Step 4: Simplify right side
    19,818.36x = 295,897,058.42
  5. Step 5: Solve for x
    x = 295,897,058.42/19,818.36
  6. Step 6: Final answer
    x = 14,930.45

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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.