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Finding the Fourth Proportional to 128,171.66, 192,298.62 and 61,616.66

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Solution

The fourth proportional to 128,171.66, 192,298.62 and 61,616.66 is: 92,444.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,171.66 : 192,298.62 = 61,616.66 : x
  2. Step 2: Convert to fraction form
    128,171.66/192,298.62 = 61,616.66/x
  3. Step 3: Cross multiply
    128,171.66x = 192,298.62 × 61,616.66
  4. Step 4: Simplify right side
    128,171.66x = 11,848,798,687.01
  5. Step 5: Solve for x
    x = 11,848,798,687.01/128,171.66
  6. Step 6: Final answer
    x = 92,444.76

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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.