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Finding the Fourth Proportional to 84,908.50, 127,187.70 and 49,741.54

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Solution

The fourth proportional to 84,908.50, 127,187.70 and 49,741.54 is: 74,509.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,908.50 : 127,187.70 = 49,741.54 : x
  2. Step 2: Convert to fraction form
    84,908.50/127,187.70 = 49,741.54/x
  3. Step 3: Cross multiply
    84,908.50x = 127,187.70 × 49,741.54
  4. Step 4: Simplify right side
    84,908.50x = 6,326,512,067.06
  5. Step 5: Solve for x
    x = 6,326,512,067.06/84,908.50
  6. Step 6: Final answer
    x = 74,509.76

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1.5x scale

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.