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Finding the Fourth Proportional to 7,060.79, 9,743.90 and 3,916.98

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Solution

The fourth proportional to 7,060.79, 9,743.90 and 3,916.98 is: 5,405.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,060.79 : 9,743.90 = 3,916.98 : x
  2. Step 2: Convert to fraction form
    7,060.79/9,743.90 = 3,916.98/x
  3. Step 3: Cross multiply
    7,060.79x = 9,743.90 × 3,916.98
  4. Step 4: Simplify right side
    7,060.79x = 38,166,641.84
  5. Step 5: Solve for x
    x = 38,166,641.84/7,060.79
  6. Step 6: Final answer
    x = 5,405.44

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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.