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Finding the Fourth Proportional to 664,838.70, 996,711.30 and 286,050.30

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Solution

The fourth proportional to 664,838.70, 996,711.30 and 286,050.30 is: 428,840.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    664,838.70 : 996,711.30 = 286,050.30 : x
  2. Step 2: Convert to fraction form
    664,838.70/996,711.30 = 286,050.30/x
  3. Step 3: Cross multiply
    664,838.70x = 996,711.30 × 286,050.30
  4. Step 4: Simplify right side
    664,838.70x = 285,109,566,378.39
  5. Step 5: Solve for x
    x = 285,109,566,378.39/664,838.70
  6. Step 6: Final answer
    x = 428,840.21

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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.