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Finding the Fourth Proportional to 91,503.90, 126,354.18 and 57,568.94

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Solution

The fourth proportional to 91,503.90, 126,354.18 and 57,568.94 is: 79,494.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,503.90 : 126,354.18 = 57,568.94 : x
  2. Step 2: Convert to fraction form
    91,503.90/126,354.18 = 57,568.94/x
  3. Step 3: Cross multiply
    91,503.90x = 126,354.18 × 57,568.94
  4. Step 4: Simplify right side
    91,503.90x = 7,274,076,207.17
  5. Step 5: Solve for x
    x = 7,274,076,207.17/91,503.90
  6. Step 6: Final answer
    x = 79,494.71

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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.