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Finding the Fourth Proportional to 61,971.86, 85,524.18 and 35,115.50

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Solution

The fourth proportional to 61,971.86, 85,524.18 and 35,115.50 is: 48,461.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,971.86 : 85,524.18 = 35,115.50 : x
  2. Step 2: Convert to fraction form
    61,971.86/85,524.18 = 35,115.50/x
  3. Step 3: Cross multiply
    61,971.86x = 85,524.18 × 35,115.50
  4. Step 4: Simplify right side
    61,971.86x = 3,003,224,342.79
  5. Step 5: Solve for x
    x = 3,003,224,342.79/61,971.86
  6. Step 6: Final answer
    x = 48,461.10

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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.