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Finding the Fourth Proportional to 681,400.29, 940,332.42 and 395,086.45

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Solution

The fourth proportional to 681,400.29, 940,332.42 and 395,086.45 is: 545,219.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    681,400.29 : 940,332.42 = 395,086.45 : x
  2. Step 2: Convert to fraction form
    681,400.29/940,332.42 = 395,086.45/x
  3. Step 3: Cross multiply
    681,400.29x = 940,332.42 × 395,086.45
  4. Step 4: Simplify right side
    681,400.29x = 371,512,597,637.71
  5. Step 5: Solve for x
    x = 371,512,597,637.71/681,400.29
  6. Step 6: Final answer
    x = 545,219.32

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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.