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Finding the Fourth Proportional to 694,485.60, 958,385.52 and 392,680.80

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Solution

The fourth proportional to 694,485.60, 958,385.52 and 392,680.80 is: 541,896.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    694,485.60 : 958,385.52 = 392,680.80 : x
  2. Step 2: Convert to fraction form
    694,485.60/958,385.52 = 392,680.80/x
  3. Step 3: Cross multiply
    694,485.60x = 958,385.52 × 392,680.80
  4. Step 4: Simplify right side
    694,485.60x = 376,339,592,702.02
  5. Step 5: Solve for x
    x = 376,339,592,702.02/694,485.60
  6. Step 6: Final answer
    x = 541,896.90

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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.