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Finding the Fourth Proportional to 115,459.70, 173,189.55 and 76,061.30

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Solution

The fourth proportional to 115,459.70, 173,189.55 and 76,061.30 is: 114,091.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,459.70 : 173,189.55 = 76,061.30 : x
  2. Step 2: Convert to fraction form
    115,459.70/173,189.55 = 76,061.30/x
  3. Step 3: Cross multiply
    115,459.70x = 173,189.55 × 76,061.30
  4. Step 4: Simplify right side
    115,459.70x = 13,173,022,319.42
  5. Step 5: Solve for x
    x = 13,173,022,319.42/115,459.70
  6. Step 6: Final answer
    x = 114,091.95

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