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Finding the Fourth Proportional to 716,400.48, 988,593.62 and 394,058.54

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Solution

The fourth proportional to 716,400.48, 988,593.62 and 394,058.54 is: 543,779.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    716,400.48 : 988,593.62 = 394,058.54 : x
  2. Step 2: Convert to fraction form
    716,400.48/988,593.62 = 394,058.54/x
  3. Step 3: Cross multiply
    716,400.48x = 988,593.62 × 394,058.54
  4. Step 4: Simplify right side
    716,400.48x = 389,563,758,550.52
  5. Step 5: Solve for x
    x = 389,563,758,550.52/716,400.48
  6. Step 6: Final answer
    x = 543,779.31

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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.