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Finding the Fourth Proportional to 152,927.26, 211,039.62 and 85,859.26

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Solution

The fourth proportional to 152,927.26, 211,039.62 and 85,859.26 is: 118,485.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    152,927.26 : 211,039.62 = 85,859.26 : x
  2. Step 2: Convert to fraction form
    152,927.26/211,039.62 = 85,859.26/x
  3. Step 3: Cross multiply
    152,927.26x = 211,039.62 × 85,859.26
  4. Step 4: Simplify right side
    152,927.26x = 18,119,705,603.88
  5. Step 5: Solve for x
    x = 18,119,705,603.88/152,927.26
  6. Step 6: Final answer
    x = 118,485.78

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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.