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Finding the Fourth Proportional to 681,544.50, 940,691.74 and 423,616.28

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Solution

The fourth proportional to 681,544.50, 940,691.74 and 423,616.28 is: 584,690.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    681,544.50 : 940,691.74 = 423,616.28 : x
  2. Step 2: Convert to fraction form
    681,544.50/940,691.74 = 423,616.28/x
  3. Step 3: Cross multiply
    681,544.50x = 940,691.74 × 423,616.28
  4. Step 4: Simplify right side
    681,544.50x = 398,492,335,525.53
  5. Step 5: Solve for x
    x = 398,492,335,525.53/681,544.50
  6. Step 6: Final answer
    x = 584,690.12

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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.