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Finding the Fourth Proportional to 583,906.80, 805,791.60 and 315,634.80

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Solution

The fourth proportional to 583,906.80, 805,791.60 and 315,634.80 is: 435,576.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    583,906.80 : 805,791.60 = 315,634.80 : x
  2. Step 2: Convert to fraction form
    583,906.80/805,791.60 = 315,634.80/x
  3. Step 3: Cross multiply
    583,906.80x = 805,791.60 × 315,634.80
  4. Step 4: Simplify right side
    583,906.80x = 254,335,870,507.68
  5. Step 5: Solve for x
    x = 254,335,870,507.68/583,906.80
  6. Step 6: Final answer
    x = 435,576.14

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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.