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Finding the Fourth Proportional to 698,364.13, 963,759.62 and 392,422.17

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Solution

The fourth proportional to 698,364.13, 963,759.62 and 392,422.17 is: 541,552.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    698,364.13 : 963,759.62 = 392,422.17 : x
  2. Step 2: Convert to fraction form
    698,364.13/963,759.62 = 392,422.17/x
  3. Step 3: Cross multiply
    698,364.13x = 963,759.62 × 392,422.17
  4. Step 4: Simplify right side
    698,364.13x = 378,200,638,405.41
  5. Step 5: Solve for x
    x = 378,200,638,405.41/698,364.13
  6. Step 6: Final answer
    x = 541,552.21

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1.5x scale

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.