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Finding the Fourth Proportional to 343,498.57, 474,035.63 and 190,531.78

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Solution

The fourth proportional to 343,498.57, 474,035.63 and 190,531.78 is: 262,938.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    343,498.57 : 474,035.63 = 190,531.78 : x
  2. Step 2: Convert to fraction form
    343,498.57/474,035.63 = 190,531.78/x
  3. Step 3: Cross multiply
    343,498.57x = 474,035.63 × 190,531.78
  4. Step 4: Simplify right side
    343,498.57x = 90,318,853,033.22
  5. Step 5: Solve for x
    x = 90,318,853,033.22/343,498.57
  6. Step 6: Final answer
    x = 262,938.07

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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.