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Finding the Fourth Proportional to 666,728.40, 1,000,092.60 and 622,113.60

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Solution

The fourth proportional to 666,728.40, 1,000,092.60 and 622,113.60 is: 933,170.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    666,728.40 : 1,000,092.60 = 622,113.60 : x
  2. Step 2: Convert to fraction form
    666,728.40/1,000,092.60 = 622,113.60/x
  3. Step 3: Cross multiply
    666,728.40x = 1,000,092.60 × 622,113.60
  4. Step 4: Simplify right side
    666,728.40x = 622,171,207,719.36
  5. Step 5: Solve for x
    x = 622,171,207,719.36/666,728.40
  6. Step 6: Final answer
    x = 933,170.40

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1.5x scale

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.