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Finding the Fourth Proportional to 76,628.64, 105,745.86 and 44,364.62

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Solution

The fourth proportional to 76,628.64, 105,745.86 and 44,364.62 is: 61,222.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,628.64 : 105,745.86 = 44,364.62 : x
  2. Step 2: Convert to fraction form
    76,628.64/105,745.86 = 44,364.62/x
  3. Step 3: Cross multiply
    76,628.64x = 105,745.86 × 44,364.62
  4. Step 4: Simplify right side
    76,628.64x = 4,691,374,895.47
  5. Step 5: Solve for x
    x = 4,691,374,895.47/76,628.64
  6. Step 6: Final answer
    x = 61,222.21

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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.