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Finding the Fourth Proportional to 8,523.90, 11,758.77 and 7,342.92

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Solution

The fourth proportional to 8,523.90, 11,758.77 and 7,342.92 is: 10,129.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,523.90 : 11,758.77 = 7,342.92 : x
  2. Step 2: Convert to fraction form
    8,523.90/11,758.77 = 7,342.92/x
  3. Step 3: Cross multiply
    8,523.90x = 11,758.77 × 7,342.92
  4. Step 4: Simplify right side
    8,523.90x = 86,343,707.41
  5. Step 5: Solve for x
    x = 86,343,707.41/8,523.90
  6. Step 6: Final answer
    x = 10,129.60

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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.