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Finding the Fourth Proportional to 91,096.88, 125,811.72 and 69,354.70

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Solution

The fourth proportional to 91,096.88, 125,811.72 and 69,354.70 is: 95,784.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,096.88 : 125,811.72 = 69,354.70 : x
  2. Step 2: Convert to fraction form
    91,096.88/125,811.72 = 69,354.70/x
  3. Step 3: Cross multiply
    91,096.88x = 125,811.72 × 69,354.70
  4. Step 4: Simplify right side
    91,096.88x = 8,725,633,782.55
  5. Step 5: Solve for x
    x = 8,725,633,782.55/91,096.88
  6. Step 6: Final answer
    x = 95,784.11

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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.