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Finding the Fourth Proportional to 604,642.20, 906,649.56 and 178,122.66

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Solution

The fourth proportional to 604,642.20, 906,649.56 and 178,122.66 is: 267,091.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    604,642.20 : 906,649.56 = 178,122.66 : x
  2. Step 2: Convert to fraction form
    604,642.20/906,649.56 = 178,122.66/x
  3. Step 3: Cross multiply
    604,642.20x = 906,649.56 × 178,122.66
  4. Step 4: Simplify right side
    604,642.20x = 161,494,831,315.03
  5. Step 5: Solve for x
    x = 161,494,831,315.03/604,642.20
  6. Step 6: Final answer
    x = 267,091.56

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.