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Finding the Fourth Proportional to 19,853.96, 29,784.18 and 7,374.02

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Solution

The fourth proportional to 19,853.96, 29,784.18 and 7,374.02 is: 11,062.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,853.96 : 29,784.18 = 7,374.02 : x
  2. Step 2: Convert to fraction form
    19,853.96/29,784.18 = 7,374.02/x
  3. Step 3: Cross multiply
    19,853.96x = 29,784.18 × 7,374.02
  4. Step 4: Simplify right side
    19,853.96x = 219,629,139.00
  5. Step 5: Solve for x
    x = 219,629,139.00/19,853.96
  6. Step 6: Final answer
    x = 11,062.23

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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.