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Finding the Fourth Proportional to 681,801.66, 940,867.11 and 427,293.18

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Solution

The fourth proportional to 681,801.66, 940,867.11 and 427,293.18 is: 589,652.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    681,801.66 : 940,867.11 = 427,293.18 : x
  2. Step 2: Convert to fraction form
    681,801.66/940,867.11 = 427,293.18/x
  3. Step 3: Cross multiply
    681,801.66x = 940,867.11 × 427,293.18
  4. Step 4: Simplify right side
    681,801.66x = 402,026,099,389.31
  5. Step 5: Solve for x
    x = 402,026,099,389.31/681,801.66
  6. Step 6: Final answer
    x = 589,652.57

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Double scale
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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.