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Finding the Fourth Proportional to 76,980.60, 106,187.04 and 46,750.56

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Solution

The fourth proportional to 76,980.60, 106,187.04 and 46,750.56 is: 64,487.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,980.60 : 106,187.04 = 46,750.56 : x
  2. Step 2: Convert to fraction form
    76,980.60/106,187.04 = 46,750.56/x
  3. Step 3: Cross multiply
    76,980.60x = 106,187.04 × 46,750.56
  4. Step 4: Simplify right side
    76,980.60x = 4,964,303,584.74
  5. Step 5: Solve for x
    x = 4,964,303,584.74/76,980.60
  6. Step 6: Final answer
    x = 64,487.72

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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.