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Finding the Fourth Proportional to 12,184.96, 16,808.64 and 7,700.32

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Solution

The fourth proportional to 12,184.96, 16,808.64 and 7,700.32 is: 10,622.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,184.96 : 16,808.64 = 7,700.32 : x
  2. Step 2: Convert to fraction form
    12,184.96/16,808.64 = 7,700.32/x
  3. Step 3: Cross multiply
    12,184.96x = 16,808.64 × 7,700.32
  4. Step 4: Simplify right side
    12,184.96x = 129,431,906.76
  5. Step 5: Solve for x
    x = 129,431,906.76/12,184.96
  6. Step 6: Final answer
    x = 10,622.27

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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.