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Finding the Fourth Proportional to 19,641.59, 27,106.01 and 11,144.07

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Solution

The fourth proportional to 19,641.59, 27,106.01 and 11,144.07 is: 15,379.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,641.59 : 27,106.01 = 11,144.07 : x
  2. Step 2: Convert to fraction form
    19,641.59/27,106.01 = 11,144.07/x
  3. Step 3: Cross multiply
    19,641.59x = 27,106.01 × 11,144.07
  4. Step 4: Simplify right side
    19,641.59x = 302,071,151.35
  5. Step 5: Solve for x
    x = 302,071,151.35/19,641.59
  6. Step 6: Final answer
    x = 15,379.16

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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.