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Finding the Fourth Proportional to 57,291.88, 79,057.62 and 33,420.64

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Solution

The fourth proportional to 57,291.88, 79,057.62 and 33,420.64 is: 46,117.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,291.88 : 79,057.62 = 33,420.64 : x
  2. Step 2: Convert to fraction form
    57,291.88/79,057.62 = 33,420.64/x
  3. Step 3: Cross multiply
    57,291.88x = 79,057.62 × 33,420.64
  4. Step 4: Simplify right side
    57,291.88x = 2,642,156,257.28
  5. Step 5: Solve for x
    x = 2,642,156,257.28/57,291.88
  6. Step 6: Final answer
    x = 46,117.46

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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.