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Finding the Fourth Proportional to 9,656.76, 14,486.16 and 3,081.40

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Solution

The fourth proportional to 9,656.76, 14,486.16 and 3,081.40 is: 4,622.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,656.76 : 14,486.16 = 3,081.40 : x
  2. Step 2: Convert to fraction form
    9,656.76/14,486.16 = 3,081.40/x
  3. Step 3: Cross multiply
    9,656.76x = 14,486.16 × 3,081.40
  4. Step 4: Simplify right side
    9,656.76x = 44,637,653.42
  5. Step 5: Solve for x
    x = 44,637,653.42/9,656.76
  6. Step 6: Final answer
    x = 4,622.43

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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.