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Finding the Fourth Proportional to 52,718.59, 79,027.09 and 19,420.46

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Solution

The fourth proportional to 52,718.59, 79,027.09 and 19,420.46 is: 29,111.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,718.59 : 79,027.09 = 19,420.46 : x
  2. Step 2: Convert to fraction form
    52,718.59/79,027.09 = 19,420.46/x
  3. Step 3: Cross multiply
    52,718.59x = 79,027.09 × 19,420.46
  4. Step 4: Simplify right side
    52,718.59x = 1,534,741,948.02
  5. Step 5: Solve for x
    x = 1,534,741,948.02/52,718.59
  6. Step 6: Final answer
    x = 29,111.97

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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.