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Finding the Fourth Proportional to 76,761.75, 105,931.90 and 44,931.33

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Solution

The fourth proportional to 76,761.75, 105,931.90 and 44,931.33 is: 62,005.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,761.75 : 105,931.90 = 44,931.33 : x
  2. Step 2: Convert to fraction form
    76,761.75/105,931.90 = 44,931.33/x
  3. Step 3: Cross multiply
    76,761.75x = 105,931.90 × 44,931.33
  4. Step 4: Simplify right side
    76,761.75x = 4,759,661,044.10
  5. Step 5: Solve for x
    x = 4,759,661,044.10/76,761.75
  6. Step 6: Final answer
    x = 62,005.63

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1.5x scale

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.