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Finding the Fourth Proportional to 91,357.88, 126,021.30 and 53,624.84

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Solution

The fourth proportional to 91,357.88, 126,021.30 and 53,624.84 is: 73,971.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,357.88 : 126,021.30 = 53,624.84 : x
  2. Step 2: Convert to fraction form
    91,357.88/126,021.30 = 53,624.84/x
  3. Step 3: Cross multiply
    91,357.88x = 126,021.30 × 53,624.84
  4. Step 4: Simplify right side
    91,357.88x = 6,757,872,049.09
  5. Step 5: Solve for x
    x = 6,757,872,049.09/91,357.88
  6. Step 6: Final answer
    x = 73,971.42

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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.