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Finding the Fourth Proportional to 505,262.02, 697,237.10 and 287,450.18

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Solution

The fourth proportional to 505,262.02, 697,237.10 and 287,450.18 is: 396,667.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    505,262.02 : 697,237.10 = 287,450.18 : x
  2. Step 2: Convert to fraction form
    505,262.02/697,237.10 = 287,450.18/x
  3. Step 3: Cross multiply
    505,262.02x = 697,237.10 × 287,450.18
  4. Step 4: Simplify right side
    505,262.02x = 200,420,929,040.97
  5. Step 5: Solve for x
    x = 200,420,929,040.97/505,262.02
  6. Step 6: Final answer
    x = 396,667.32

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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.