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Finding the Fourth Proportional to 117,987.32, 177,007.32 and 43,107.44

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Solution

The fourth proportional to 117,987.32, 177,007.32 and 43,107.44 is: 64,670.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,987.32 : 177,007.32 = 43,107.44 : x
  2. Step 2: Convert to fraction form
    117,987.32/177,007.32 = 43,107.44/x
  3. Step 3: Cross multiply
    117,987.32x = 177,007.32 × 43,107.44
  4. Step 4: Simplify right side
    117,987.32x = 7,630,332,426.46
  5. Step 5: Solve for x
    x = 7,630,332,426.46/117,987.32
  6. Step 6: Final answer
    x = 64,670.78

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1.5x scale

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.