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Finding the Fourth Proportional to 4,663.74, 7,021.14 and 4,255.50

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Solution

The fourth proportional to 4,663.74, 7,021.14 and 4,255.50 is: 6,406.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,663.74 : 7,021.14 = 4,255.50 : x
  2. Step 2: Convert to fraction form
    4,663.74/7,021.14 = 4,255.50/x
  3. Step 3: Cross multiply
    4,663.74x = 7,021.14 × 4,255.50
  4. Step 4: Simplify right side
    4,663.74x = 29,878,461.27
  5. Step 5: Solve for x
    x = 29,878,461.27/4,663.74
  6. Step 6: Final answer
    x = 6,406.55

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.