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Finding the Fourth Proportional to 4,890.61, 6,750.42 and 4,008.52

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Solution

The fourth proportional to 4,890.61, 6,750.42 and 4,008.52 is: 5,532.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,890.61 : 6,750.42 = 4,008.52 : x
  2. Step 2: Convert to fraction form
    4,890.61/6,750.42 = 4,008.52/x
  3. Step 3: Cross multiply
    4,890.61x = 6,750.42 × 4,008.52
  4. Step 4: Simplify right side
    4,890.61x = 27,059,159.83
  5. Step 5: Solve for x
    x = 27,059,159.83/4,890.61
  6. Step 6: Final answer
    x = 5,532.89

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.