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Finding the Fourth Proportional to 503,047.85, 694,205.54 and 288,188.77

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Solution

The fourth proportional to 503,047.85, 694,205.54 and 288,188.77 is: 397,700.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    503,047.85 : 694,205.54 = 288,188.77 : x
  2. Step 2: Convert to fraction form
    503,047.85/694,205.54 = 288,188.77/x
  3. Step 3: Cross multiply
    503,047.85x = 694,205.54 × 288,188.77
  4. Step 4: Simplify right side
    503,047.85x = 200,062,237,523.33
  5. Step 5: Solve for x
    x = 200,062,237,523.33/503,047.85
  6. Step 6: Final answer
    x = 397,700.21

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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.