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Finding the Fourth Proportional to 678,611.82, 936,847.86 and 523,223.70

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Solution

The fourth proportional to 678,611.82, 936,847.86 and 523,223.70 is: 722,329.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    678,611.82 : 936,847.86 = 523,223.70 : x
  2. Step 2: Convert to fraction form
    678,611.82/936,847.86 = 523,223.70/x
  3. Step 3: Cross multiply
    678,611.82x = 936,847.86 × 523,223.70
  4. Step 4: Simplify right side
    678,611.82x = 490,181,003,646.28
  5. Step 5: Solve for x
    x = 490,181,003,646.28/678,611.82
  6. Step 6: Final answer
    x = 722,329.01

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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.