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Finding the Fourth Proportional to 4,927.31, 7,394.40 and 4,456.74

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Solution

The fourth proportional to 4,927.31, 7,394.40 and 4,456.74 is: 6,688.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,927.31 : 7,394.40 = 4,456.74 : x
  2. Step 2: Convert to fraction form
    4,927.31/7,394.40 = 4,456.74/x
  3. Step 3: Cross multiply
    4,927.31x = 7,394.40 × 4,456.74
  4. Step 4: Simplify right side
    4,927.31x = 32,954,918.26
  5. Step 5: Solve for x
    x = 32,954,918.26/4,927.31
  6. Step 6: Final answer
    x = 6,688.22

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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.