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Finding the Fourth Proportional to 113,765.28, 156,969.36 and 69,044.64

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Solution

The fourth proportional to 113,765.28, 156,969.36 and 69,044.64 is: 95,265.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,765.28 : 156,969.36 = 69,044.64 : x
  2. Step 2: Convert to fraction form
    113,765.28/156,969.36 = 69,044.64/x
  3. Step 3: Cross multiply
    113,765.28x = 156,969.36 × 69,044.64
  4. Step 4: Simplify right side
    113,765.28x = 10,837,892,952.23
  5. Step 5: Solve for x
    x = 10,837,892,952.23/113,765.28
  6. Step 6: Final answer
    x = 95,265.38

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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.