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Finding the Fourth Proportional to 61,898.36, 85,440.06 and 36,403.61

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Solution

The fourth proportional to 61,898.36, 85,440.06 and 36,403.61 is: 50,248.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,898.36 : 85,440.06 = 36,403.61 : x
  2. Step 2: Convert to fraction form
    61,898.36/85,440.06 = 36,403.61/x
  3. Step 3: Cross multiply
    61,898.36x = 85,440.06 × 36,403.61
  4. Step 4: Simplify right side
    61,898.36x = 3,110,326,195.42
  5. Step 5: Solve for x
    x = 3,110,326,195.42/61,898.36
  6. Step 6: Final answer
    x = 50,248.93

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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.