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Finding the Fourth Proportional to 633,513.78, 874,249.26 and 347,044.20

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Solution

The fourth proportional to 633,513.78, 874,249.26 and 347,044.20 is: 478,921.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    633,513.78 : 874,249.26 = 347,044.20 : x
  2. Step 2: Convert to fraction form
    633,513.78/874,249.26 = 347,044.20/x
  3. Step 3: Cross multiply
    633,513.78x = 874,249.26 × 347,044.20
  4. Step 4: Simplify right side
    633,513.78x = 303,403,135,037.29
  5. Step 5: Solve for x
    x = 303,403,135,037.29/633,513.78
  6. Step 6: Final answer
    x = 478,921.13

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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.