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Finding the Fourth Proportional to 681,626.91, 940,589.81 and 395,165.45

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Solution

The fourth proportional to 681,626.91, 940,589.81 and 395,165.45 is: 545,296.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    681,626.91 : 940,589.81 = 395,165.45 : x
  2. Step 2: Convert to fraction form
    681,626.91/940,589.81 = 395,165.45/x
  3. Step 3: Cross multiply
    681,626.91x = 940,589.81 × 395,165.45
  4. Step 4: Simplify right side
    681,626.91x = 371,688,595,534.07
  5. Step 5: Solve for x
    x = 371,688,595,534.07/681,626.91
  6. Step 6: Final answer
    x = 545,296.25

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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.