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Finding the Fourth Proportional to 205,590.60, 308,385.90 and 197,717.40

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Solution

The fourth proportional to 205,590.60, 308,385.90 and 197,717.40 is: 296,576.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    205,590.60 : 308,385.90 = 197,717.40 : x
  2. Step 2: Convert to fraction form
    205,590.60/308,385.90 = 197,717.40/x
  3. Step 3: Cross multiply
    205,590.60x = 308,385.90 × 197,717.40
  4. Step 4: Simplify right side
    205,590.60x = 60,973,258,344.66
  5. Step 5: Solve for x
    x = 60,973,258,344.66/205,590.60
  6. Step 6: Final answer
    x = 296,576.10

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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.