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Finding the Fourth Proportional to 4,916.61, 7,373.68 and 1,406.64

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Solution

The fourth proportional to 4,916.61, 7,373.68 and 1,406.64 is: 2,109.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,916.61 : 7,373.68 = 1,406.64 : x
  2. Step 2: Convert to fraction form
    4,916.61/7,373.68 = 1,406.64/x
  3. Step 3: Cross multiply
    4,916.61x = 7,373.68 × 1,406.64
  4. Step 4: Simplify right side
    4,916.61x = 10,372,137.37
  5. Step 5: Solve for x
    x = 10,372,137.37/4,916.61
  6. Step 6: Final answer
    x = 2,109.61

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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.