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Finding the Fourth Proportional to 19,665.26, 29,502.16 and 7,185.26

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Solution

The fourth proportional to 19,665.26, 29,502.16 and 7,185.26 is: 10,779.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,665.26 : 29,502.16 = 7,185.26 : x
  2. Step 2: Convert to fraction form
    19,665.26/29,502.16 = 7,185.26/x
  3. Step 3: Cross multiply
    19,665.26x = 29,502.16 × 7,185.26
  4. Step 4: Simplify right side
    19,665.26x = 211,980,725.21
  5. Step 5: Solve for x
    x = 211,980,725.21/19,665.26
  6. Step 6: Final answer
    x = 10,779.45

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.