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Finding the Fourth Proportional to 56,509.44, 77,997.36 and 38,611.68

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Solution

The fourth proportional to 56,509.44, 77,997.36 and 38,611.68 is: 53,293.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,509.44 : 77,997.36 = 38,611.68 : x
  2. Step 2: Convert to fraction form
    56,509.44/77,997.36 = 38,611.68/x
  3. Step 3: Cross multiply
    56,509.44x = 77,997.36 × 38,611.68
  4. Step 4: Simplify right side
    56,509.44x = 3,011,609,105.16
  5. Step 5: Solve for x
    x = 3,011,609,105.16/56,509.44
  6. Step 6: Final answer
    x = 53,293.91

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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.