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Finding the Fourth Proportional to 358,986.13, 495,398.31 and 197,841.31

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Solution

The fourth proportional to 358,986.13, 495,398.31 and 197,841.31 is: 273,019.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    358,986.13 : 495,398.31 = 197,841.31 : x
  2. Step 2: Convert to fraction form
    358,986.13/495,398.31 = 197,841.31/x
  3. Step 3: Cross multiply
    358,986.13x = 495,398.31 × 197,841.31
  4. Step 4: Simplify right side
    358,986.13x = 98,010,250,622.19
  5. Step 5: Solve for x
    x = 98,010,250,622.19/358,986.13
  6. Step 6: Final answer
    x = 273,019.60

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.