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Finding the Fourth Proportional to 111,563.36, 153,930.96 and 63,165.92

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Solution

The fourth proportional to 111,563.36, 153,930.96 and 63,165.92 is: 87,153.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,563.36 : 153,930.96 = 63,165.92 : x
  2. Step 2: Convert to fraction form
    111,563.36/153,930.96 = 63,165.92/x
  3. Step 3: Cross multiply
    111,563.36x = 153,930.96 × 63,165.92
  4. Step 4: Simplify right side
    111,563.36x = 9,723,190,704.88
  5. Step 5: Solve for x
    x = 9,723,190,704.88/111,563.36
  6. Step 6: Final answer
    x = 87,153.98

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1.5x scale

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.