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Finding the Fourth Proportional to 96,914.80, 145,428.60 and 40,750.80

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Solution

The fourth proportional to 96,914.80, 145,428.60 and 40,750.80 is: 61,149.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    96,914.80 : 145,428.60 = 40,750.80 : x
  2. Step 2: Convert to fraction form
    96,914.80/145,428.60 = 40,750.80/x
  3. Step 3: Cross multiply
    96,914.80x = 145,428.60 × 40,750.80
  4. Step 4: Simplify right side
    96,914.80x = 5,926,331,792.88
  5. Step 5: Solve for x
    x = 5,926,331,792.88/96,914.80
  6. Step 6: Final answer
    x = 61,149.92

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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.