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Finding the Fourth Proportional to 199,414.60, 299,121.90 and 191,541.40

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Solution

The fourth proportional to 199,414.60, 299,121.90 and 191,541.40 is: 287,312.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    199,414.60 : 299,121.90 = 191,541.40 : x
  2. Step 2: Convert to fraction form
    199,414.60/299,121.90 = 191,541.40/x
  3. Step 3: Cross multiply
    199,414.60x = 299,121.90 × 191,541.40
  4. Step 4: Simplify right side
    199,414.60x = 57,294,227,496.66
  5. Step 5: Solve for x
    x = 57,294,227,496.66/199,414.60
  6. Step 6: Final answer
    x = 287,312.10

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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.