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Finding the Fourth Proportional to 4,326.57, 6,490.76 and 1,404.64

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Solution

The fourth proportional to 4,326.57, 6,490.76 and 1,404.64 is: 2,107.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,326.57 : 6,490.76 = 1,404.64 : x
  2. Step 2: Convert to fraction form
    4,326.57/6,490.76 = 1,404.64/x
  3. Step 3: Cross multiply
    4,326.57x = 6,490.76 × 1,404.64
  4. Step 4: Simplify right side
    4,326.57x = 9,117,181.13
  5. Step 5: Solve for x
    x = 9,117,181.13/4,326.57
  6. Step 6: Final answer
    x = 2,107.25

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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.