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Finding the Fourth Proportional to 11,858.47, 17,749.09 and 8,737.23

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Solution

The fourth proportional to 11,858.47, 17,749.09 and 8,737.23 is: 13,077.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,858.47 : 17,749.09 = 8,737.23 : x
  2. Step 2: Convert to fraction form
    11,858.47/17,749.09 = 8,737.23/x
  3. Step 3: Cross multiply
    11,858.47x = 17,749.09 × 8,737.23
  4. Step 4: Simplify right side
    11,858.47x = 155,077,881.62
  5. Step 5: Solve for x
    x = 155,077,881.62/11,858.47
  6. Step 6: Final answer
    x = 13,077.39

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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.