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Finding the Fourth Proportional to 76,613.44, 105,713.66 and 42,617.44

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Solution

The fourth proportional to 76,613.44, 105,713.66 and 42,617.44 is: 58,804.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,613.44 : 105,713.66 = 42,617.44 : x
  2. Step 2: Convert to fraction form
    76,613.44/105,713.66 = 42,617.44/x
  3. Step 3: Cross multiply
    76,613.44x = 105,713.66 × 42,617.44
  4. Step 4: Simplify right side
    76,613.44x = 4,505,245,562.23
  5. Step 5: Solve for x
    x = 4,505,245,562.23/76,613.44
  6. Step 6: Final answer
    x = 58,804.90

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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.