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Finding the Fourth Proportional to 505,373.07, 697,476.00 and 287,634.69

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Solution

The fourth proportional to 505,373.07, 697,476.00 and 287,634.69 is: 396,970.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    505,373.07 : 697,476.00 = 287,634.69 : x
  2. Step 2: Convert to fraction form
    505,373.07/697,476.00 = 287,634.69/x
  3. Step 3: Cross multiply
    505,373.07x = 697,476.00 × 287,634.69
  4. Step 4: Simplify right side
    505,373.07x = 200,618,294,121.07
  5. Step 5: Solve for x
    x = 200,618,294,121.07/505,373.07
  6. Step 6: Final answer
    x = 396,970.68

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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.