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Finding the Fourth Proportional to 61,814.56, 85,241.28 and 52,891.60

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Solution

The fourth proportional to 61,814.56, 85,241.28 and 52,891.60 is: 72,936.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,814.56 : 85,241.28 = 52,891.60 : x
  2. Step 2: Convert to fraction form
    61,814.56/85,241.28 = 52,891.60/x
  3. Step 3: Cross multiply
    61,814.56x = 85,241.28 × 52,891.60
  4. Step 4: Simplify right side
    61,814.56x = 4,508,547,685.25
  5. Step 5: Solve for x
    x = 4,508,547,685.25/61,814.56
  6. Step 6: Final answer
    x = 72,936.66

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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.