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Finding the Fourth Proportional to 5,307.52, 7,964.40 and 2,385.92

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Solution

The fourth proportional to 5,307.52, 7,964.40 and 2,385.92 is: 3,580.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,307.52 : 7,964.40 = 2,385.92 : x
  2. Step 2: Convert to fraction form
    5,307.52/7,964.40 = 2,385.92/x
  3. Step 3: Cross multiply
    5,307.52x = 7,964.40 × 2,385.92
  4. Step 4: Simplify right side
    5,307.52x = 19,002,421.25
  5. Step 5: Solve for x
    x = 19,002,421.25/5,307.52
  6. Step 6: Final answer
    x = 3,580.28

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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.