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Finding the Fourth Proportional to 755,646.72, 1,042,794 and 416,115.60

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Solution

The fourth proportional to 755,646.72, 1,042,794 and 416,115.60 is: 574,240.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    755,646.72 : 1,042,794 = 416,115.60 : x
  2. Step 2: Convert to fraction form
    755,646.72/1,042,794 = 416,115.60/x
  3. Step 3: Cross multiply
    755,646.72x = 1,042,794 × 416,115.60
  4. Step 4: Simplify right side
    755,646.72x = 433,922,850,986.40
  5. Step 5: Solve for x
    x = 433,922,850,986.40/755,646.72
  6. Step 6: Final answer
    x = 574,240.37

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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.