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Finding the Fourth Proportional to 51,999.59, 78,009.11 and 20,837.27

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Solution

The fourth proportional to 51,999.59, 78,009.11 and 20,837.27 is: 31,259.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,999.59 : 78,009.11 = 20,837.27 : x
  2. Step 2: Convert to fraction form
    51,999.59/78,009.11 = 20,837.27/x
  3. Step 3: Cross multiply
    51,999.59x = 78,009.11 × 20,837.27
  4. Step 4: Simplify right side
    51,999.59x = 1,625,496,393.30
  5. Step 5: Solve for x
    x = 1,625,496,393.30/51,999.59
  6. Step 6: Final answer
    x = 31,259.80

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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.