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Finding the Fourth Proportional to 4,691.61, 7,038.60 and 1,404.69

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Solution

The fourth proportional to 4,691.61, 7,038.60 and 1,404.69 is: 2,107.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,691.61 : 7,038.60 = 1,404.69 : x
  2. Step 2: Convert to fraction form
    4,691.61/7,038.60 = 1,404.69/x
  3. Step 3: Cross multiply
    4,691.61x = 7,038.60 × 1,404.69
  4. Step 4: Simplify right side
    4,691.61x = 9,887,051.03
  5. Step 5: Solve for x
    x = 9,887,051.03/4,691.61
  6. Step 6: Final answer
    x = 2,107.39

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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.