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Finding the Fourth Proportional to 204,038.60, 306,101.10 and 61,872.20

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Solution

The fourth proportional to 204,038.60, 306,101.10 and 61,872.20 is: 92,821.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    204,038.60 : 306,101.10 = 61,872.20 : x
  2. Step 2: Convert to fraction form
    204,038.60/306,101.10 = 61,872.20/x
  3. Step 3: Cross multiply
    204,038.60x = 306,101.10 × 61,872.20
  4. Step 4: Simplify right side
    204,038.60x = 18,939,148,479.42
  5. Step 5: Solve for x
    x = 18,939,148,479.42/204,038.60
  6. Step 6: Final answer
    x = 92,821.40

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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.