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Finding the Fourth Proportional to 76,171.77, 105,118.11 and 43,888.56

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Solution

The fourth proportional to 76,171.77, 105,118.11 and 43,888.56 is: 60,566.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,171.77 : 105,118.11 = 43,888.56 : x
  2. Step 2: Convert to fraction form
    76,171.77/105,118.11 = 43,888.56/x
  3. Step 3: Cross multiply
    76,171.77x = 105,118.11 × 43,888.56
  4. Step 4: Simplify right side
    76,171.77x = 4,613,482,477.82
  5. Step 5: Solve for x
    x = 4,613,482,477.82/76,171.77
  6. Step 6: Final answer
    x = 60,566.83

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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.