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Finding the Fourth Proportional to 61,671.78, 85,108.61 and 34,816.77

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Solution

The fourth proportional to 61,671.78, 85,108.61 and 34,816.77 is: 48,048.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,671.78 : 85,108.61 = 34,816.77 : x
  2. Step 2: Convert to fraction form
    61,671.78/85,108.61 = 34,816.77/x
  3. Step 3: Cross multiply
    61,671.78x = 85,108.61 × 34,816.77
  4. Step 4: Simplify right side
    61,671.78x = 2,963,206,725.31
  5. Step 5: Solve for x
    x = 2,963,206,725.31/61,671.78
  6. Step 6: Final answer
    x = 48,048.02

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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.