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Finding the Fourth Proportional to 99,695.72, 137,509.44 and 96,400.64

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Solution

The fourth proportional to 99,695.72, 137,509.44 and 96,400.64 is: 132,964.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,695.72 : 137,509.44 = 96,400.64 : x
  2. Step 2: Convert to fraction form
    99,695.72/137,509.44 = 96,400.64/x
  3. Step 3: Cross multiply
    99,695.72x = 137,509.44 × 96,400.64
  4. Step 4: Simplify right side
    99,695.72x = 13,255,998,022.04
  5. Step 5: Solve for x
    x = 13,255,998,022.04/99,695.72
  6. Step 6: Final answer
    x = 132,964.56

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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.