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Finding the Fourth Proportional to 7,763.31, 10,711.04 and 7,014.87

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Solution

The fourth proportional to 7,763.31, 10,711.04 and 7,014.87 is: 9,678.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,763.31 : 10,711.04 = 7,014.87 : x
  2. Step 2: Convert to fraction form
    7,763.31/10,711.04 = 7,014.87/x
  3. Step 3: Cross multiply
    7,763.31x = 10,711.04 × 7,014.87
  4. Step 4: Simplify right side
    7,763.31x = 75,136,518.09
  5. Step 5: Solve for x
    x = 75,136,518.09/7,763.31
  6. Step 6: Final answer
    x = 9,678.41

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1.5x scale

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.