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Finding the Fourth Proportional to 665,286.80, 997,930.20 and 591,803.60

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Solution

The fourth proportional to 665,286.80, 997,930.20 and 591,803.60 is: 887,705.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    665,286.80 : 997,930.20 = 591,803.60 : x
  2. Step 2: Convert to fraction form
    665,286.80/997,930.20 = 591,803.60/x
  3. Step 3: Cross multiply
    665,286.80x = 997,930.20 × 591,803.60
  4. Step 4: Simplify right side
    665,286.80x = 590,578,684,908.72
  5. Step 5: Solve for x
    x = 590,578,684,908.72/665,286.80
  6. Step 6: Final answer
    x = 887,705.40

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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.