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Finding the Fourth Proportional to 694,713.12, 958,755.52 and 388,820.16

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Solution

The fourth proportional to 694,713.12, 958,755.52 and 388,820.16 is: 536,600.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    694,713.12 : 958,755.52 = 388,820.16 : x
  2. Step 2: Convert to fraction form
    694,713.12/958,755.52 = 388,820.16/x
  3. Step 3: Cross multiply
    694,713.12x = 958,755.52 × 388,820.16
  4. Step 4: Simplify right side
    694,713.12x = 372,783,474,687.28
  5. Step 5: Solve for x
    x = 372,783,474,687.28/694,713.12
  6. Step 6: Final answer
    x = 536,600.60

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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.