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Finding the Fourth Proportional to 7,275.76, 10,916.34 and 3,810.58

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Solution

The fourth proportional to 7,275.76, 10,916.34 and 3,810.58 is: 5,717.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,275.76 : 10,916.34 = 3,810.58 : x
  2. Step 2: Convert to fraction form
    7,275.76/10,916.34 = 3,810.58/x
  3. Step 3: Cross multiply
    7,275.76x = 10,916.34 × 3,810.58
  4. Step 4: Simplify right side
    7,275.76x = 41,597,586.88
  5. Step 5: Solve for x
    x = 41,597,586.88/7,275.76
  6. Step 6: Final answer
    x = 5,717.28

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1.5x scale

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.