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Finding the Fourth Proportional to 9,616.40, 13,904.90 and 9,616.40

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Solution

The fourth proportional to 9,616.40, 13,904.90 and 9,616.40 is: 13,904.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,616.40 : 13,904.90 = 9,616.40 : x
  2. Step 2: Convert to fraction form
    9,616.40/13,904.90 = 9,616.40/x
  3. Step 3: Cross multiply
    9,616.40x = 13,904.90 × 9,616.40
  4. Step 4: Simplify right side
    9,616.40x = 133,715,080.36
  5. Step 5: Solve for x
    x = 133,715,080.36/9,616.40
  6. Step 6: Final answer
    x = 13,904.90

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.45) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.