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Finding the Fourth Proportional to 23,109.64, 34,668.72 and 7,318.64

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Solution

The fourth proportional to 23,109.64, 34,668.72 and 7,318.64 is: 10,979.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    23,109.64 : 34,668.72 = 7,318.64 : x
  2. Step 2: Convert to fraction form
    23,109.64/34,668.72 = 7,318.64/x
  3. Step 3: Cross multiply
    23,109.64x = 34,668.72 × 7,318.64
  4. Step 4: Simplify right side
    23,109.64x = 253,727,880.94
  5. Step 5: Solve for x
    x = 253,727,880.94/23,109.64
  6. Step 6: Final answer
    x = 10,979.31

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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.