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Finding the Fourth Proportional to 91,199.58, 136,847.52 and 64,716.70

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Solution

The fourth proportional to 91,199.58, 136,847.52 and 64,716.70 is: 97,109.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,199.58 : 136,847.52 = 64,716.70 : x
  2. Step 2: Convert to fraction form
    91,199.58/136,847.52 = 64,716.70/x
  3. Step 3: Cross multiply
    91,199.58x = 136,847.52 × 64,716.70
  4. Step 4: Simplify right side
    91,199.58x = 8,856,319,897.58
  5. Step 5: Solve for x
    x = 8,856,319,897.58/91,199.58
  6. Step 6: Final answer
    x = 97,109.22

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.