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Finding the Fourth Proportional to 91,863.93, 126,786.08 and 56,074.69

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Solution

The fourth proportional to 91,863.93, 126,786.08 and 56,074.69 is: 77,391.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,863.93 : 126,786.08 = 56,074.69 : x
  2. Step 2: Convert to fraction form
    91,863.93/126,786.08 = 56,074.69/x
  3. Step 3: Cross multiply
    91,863.93x = 126,786.08 × 56,074.69
  4. Step 4: Simplify right side
    91,863.93x = 7,109,490,132.32
  5. Step 5: Solve for x
    x = 7,109,490,132.32/91,863.93
  6. Step 6: Final answer
    x = 77,391.53

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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.