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Finding the Fourth Proportional to 199,701.61, 299,555.06 and 66,581.91

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Solution

The fourth proportional to 199,701.61, 299,555.06 and 66,581.91 is: 99,873.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    199,701.61 : 299,555.06 = 66,581.91 : x
  2. Step 2: Convert to fraction form
    199,701.61/299,555.06 = 66,581.91/x
  3. Step 3: Cross multiply
    199,701.61x = 299,555.06 × 66,581.91
  4. Step 4: Simplify right side
    199,701.61x = 19,944,948,044.96
  5. Step 5: Solve for x
    x = 19,944,948,044.96/199,701.61
  6. Step 6: Final answer
    x = 99,873.75

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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.