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Finding the Fourth Proportional to 505,766.25, 698,005.68 and 276,358.39

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Solution

The fourth proportional to 505,766.25, 698,005.68 and 276,358.39 is: 381,400.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    505,766.25 : 698,005.68 = 276,358.39 : x
  2. Step 2: Convert to fraction form
    505,766.25/698,005.68 = 276,358.39/x
  3. Step 3: Cross multiply
    505,766.25x = 698,005.68 × 276,358.39
  4. Step 4: Simplify right side
    505,766.25x = 192,899,725,935.66
  5. Step 5: Solve for x
    x = 192,899,725,935.66/505,766.25
  6. Step 6: Final answer
    x = 381,400.95

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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.