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Finding the Fourth Proportional to 7,617.13, 11,421.08 and 4,981.46

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Solution

The fourth proportional to 7,617.13, 11,421.08 and 4,981.46 is: 7,469.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,617.13 : 11,421.08 = 4,981.46 : x
  2. Step 2: Convert to fraction form
    7,617.13/11,421.08 = 4,981.46/x
  3. Step 3: Cross multiply
    7,617.13x = 11,421.08 × 4,981.46
  4. Step 4: Simplify right side
    7,617.13x = 56,893,617.87
  5. Step 5: Solve for x
    x = 56,893,617.87/7,617.13
  6. Step 6: Final answer
    x = 7,469.16

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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.