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Finding the Fourth Proportional to 100,866.40, 151,299.60 and 56,629.60

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Solution

The fourth proportional to 100,866.40, 151,299.60 and 56,629.60 is: 84,944.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,866.40 : 151,299.60 = 56,629.60 : x
  2. Step 2: Convert to fraction form
    100,866.40/151,299.60 = 56,629.60/x
  3. Step 3: Cross multiply
    100,866.40x = 151,299.60 × 56,629.60
  4. Step 4: Simplify right side
    100,866.40x = 8,568,035,828.16
  5. Step 5: Solve for x
    x = 8,568,035,828.16/100,866.40
  6. Step 6: Final answer
    x = 84,944.40

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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.