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Finding the Fourth Proportional to 18,567.24, 25,619.13 and 11,396.31

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Solution

The fourth proportional to 18,567.24, 25,619.13 and 11,396.31 is: 15,724.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,567.24 : 25,619.13 = 11,396.31 : x
  2. Step 2: Convert to fraction form
    18,567.24/25,619.13 = 11,396.31/x
  3. Step 3: Cross multiply
    18,567.24x = 25,619.13 × 11,396.31
  4. Step 4: Simplify right side
    18,567.24x = 291,963,547.41
  5. Step 5: Solve for x
    x = 291,963,547.41/18,567.24
  6. Step 6: Final answer
    x = 15,724.66

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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.