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Finding the Fourth Proportional to 12,416.79, 17,135.22 and 6,751.56

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Solution

The fourth proportional to 12,416.79, 17,135.22 and 6,751.56 is: 9,317.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,416.79 : 17,135.22 = 6,751.56 : x
  2. Step 2: Convert to fraction form
    12,416.79/17,135.22 = 6,751.56/x
  3. Step 3: Cross multiply
    12,416.79x = 17,135.22 × 6,751.56
  4. Step 4: Simplify right side
    12,416.79x = 115,689,465.94
  5. Step 5: Solve for x
    x = 115,689,465.94/12,416.79
  6. Step 6: Final answer
    x = 9,317.18

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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.