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Finding the Fourth Proportional to 76,928.32, 106,155.88 and 44,223.76

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Solution

The fourth proportional to 76,928.32, 106,155.88 and 44,223.76 is: 61,025.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,928.32 : 106,155.88 = 44,223.76 : x
  2. Step 2: Convert to fraction form
    76,928.32/106,155.88 = 44,223.76/x
  3. Step 3: Cross multiply
    76,928.32x = 106,155.88 × 44,223.76
  4. Step 4: Simplify right side
    76,928.32x = 4,694,612,159.71
  5. Step 5: Solve for x
    x = 4,694,612,159.71/76,928.32
  6. Step 6: Final answer
    x = 61,025.80

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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.