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Finding the Fourth Proportional to 911,698.17, 1,367,600.78 and 343,084.11

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Solution

The fourth proportional to 911,698.17, 1,367,600.78 and 343,084.11 is: 514,646.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    911,698.17 : 1,367,600.78 = 343,084.11 : x
  2. Step 2: Convert to fraction form
    911,698.17/1,367,600.78 = 343,084.11/x
  3. Step 3: Cross multiply
    911,698.17x = 1,367,600.78 × 343,084.11
  4. Step 4: Simplify right side
    911,698.17x = 469,202,096,441.61
  5. Step 5: Solve for x
    x = 469,202,096,441.61/911,698.17
  6. Step 6: Final answer
    x = 514,646.31

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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.