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Finding the Fourth Proportional to 57,390.15, 79,175.72 and 33,186.68

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Solution

The fourth proportional to 57,390.15, 79,175.72 and 33,186.68 is: 45,784.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,390.15 : 79,175.72 = 33,186.68 : x
  2. Step 2: Convert to fraction form
    57,390.15/79,175.72 = 33,186.68/x
  3. Step 3: Cross multiply
    57,390.15x = 79,175.72 × 33,186.68
  4. Step 4: Simplify right side
    57,390.15x = 2,627,578,721.60
  5. Step 5: Solve for x
    x = 2,627,578,721.60/57,390.15
  6. Step 6: Final answer
    x = 45,784.49

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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.