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Finding the Fourth Proportional to 7,157.93, 10,684.20 and 6,656.54

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Solution

The fourth proportional to 7,157.93, 10,684.20 and 6,656.54 is: 9,935.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,157.93 : 10,684.20 = 6,656.54 : x
  2. Step 2: Convert to fraction form
    7,157.93/10,684.20 = 6,656.54/x
  3. Step 3: Cross multiply
    7,157.93x = 10,684.20 × 6,656.54
  4. Step 4: Simplify right side
    7,157.93x = 71,119,776.21
  5. Step 5: Solve for x
    x = 71,119,776.21/7,157.93
  6. Step 6: Final answer
    x = 9,935.81

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.