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Finding the Fourth Proportional to 61,967.89, 85,515.47 and 35,115.51

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Solution

The fourth proportional to 61,967.89, 85,515.47 and 35,115.51 is: 48,459.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,967.89 : 85,515.47 = 35,115.51 : x
  2. Step 2: Convert to fraction form
    61,967.89/85,515.47 = 35,115.51/x
  3. Step 3: Cross multiply
    61,967.89x = 85,515.47 × 35,115.51
  4. Step 4: Simplify right side
    61,967.89x = 3,002,919,341.94
  5. Step 5: Solve for x
    x = 3,002,919,341.94/61,967.89
  6. Step 6: Final answer
    x = 48,459.28

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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.