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Finding the Fourth Proportional to 76,670.40, 105,800.40 and 44,837.40

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Solution

The fourth proportional to 76,670.40, 105,800.40 and 44,837.40 is: 61,872.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,670.40 : 105,800.40 = 44,837.40 : x
  2. Step 2: Convert to fraction form
    76,670.40/105,800.40 = 44,837.40/x
  3. Step 3: Cross multiply
    76,670.40x = 105,800.40 × 44,837.40
  4. Step 4: Simplify right side
    76,670.40x = 4,743,814,854.96
  5. Step 5: Solve for x
    x = 4,743,814,854.96/76,670.40
  6. Step 6: Final answer
    x = 61,872.83

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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.