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Finding the Fourth Proportional to 61,838.87, 85,337.67 and 34,980.81

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Solution

The fourth proportional to 61,838.87, 85,337.67 and 34,980.81 is: 48,273.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,838.87 : 85,337.67 = 34,980.81 : x
  2. Step 2: Convert to fraction form
    61,838.87/85,337.67 = 34,980.81/x
  3. Step 3: Cross multiply
    61,838.87x = 85,337.67 × 34,980.81
  4. Step 4: Simplify right side
    61,838.87x = 2,985,180,820.11
  5. Step 5: Solve for x
    x = 2,985,180,820.11/61,838.87
  6. Step 6: Final answer
    x = 48,273.53

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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.