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Finding the Fourth Proportional to 7,790.16, 10,723.14 and 6,793.68

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Solution

The fourth proportional to 7,790.16, 10,723.14 and 6,793.68 is: 9,351.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,790.16 : 10,723.14 = 6,793.68 : x
  2. Step 2: Convert to fraction form
    7,790.16/10,723.14 = 6,793.68/x
  3. Step 3: Cross multiply
    7,790.16x = 10,723.14 × 6,793.68
  4. Step 4: Simplify right side
    7,790.16x = 72,849,581.76
  5. Step 5: Solve for x
    x = 72,849,581.76/7,790.16
  6. Step 6: Final answer
    x = 9,351.49

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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.