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Finding the Fourth Proportional to 681,911.84, 940,653.02 and 426,820.16

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Solution

The fourth proportional to 681,911.84, 940,653.02 and 426,820.16 is: 588,770.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    681,911.84 : 940,653.02 = 426,820.16 : x
  2. Step 2: Convert to fraction form
    681,911.84/940,653.02 = 426,820.16/x
  3. Step 3: Cross multiply
    681,911.84x = 940,653.02 × 426,820.16
  4. Step 4: Simplify right side
    681,911.84x = 401,489,675,919.57
  5. Step 5: Solve for x
    x = 401,489,675,919.57/681,911.84
  6. Step 6: Final answer
    x = 588,770.65

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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.