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Finding the Fourth Proportional to 11,979.42, 16,525.11 and 7,502.22

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Solution

The fourth proportional to 11,979.42, 16,525.11 and 7,502.22 is: 10,349.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,979.42 : 16,525.11 = 7,502.22 : x
  2. Step 2: Convert to fraction form
    11,979.42/16,525.11 = 7,502.22/x
  3. Step 3: Cross multiply
    11,979.42x = 16,525.11 × 7,502.22
  4. Step 4: Simplify right side
    11,979.42x = 123,975,010.74
  5. Step 5: Solve for x
    x = 123,975,010.74/11,979.42
  6. Step 6: Final answer
    x = 10,349.00

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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.