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Finding the Fourth Proportional to 76,180.50, 105,129.09 and 46,372.50

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Solution

The fourth proportional to 76,180.50, 105,129.09 and 46,372.50 is: 63,994.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,180.50 : 105,129.09 = 46,372.50 : x
  2. Step 2: Convert to fraction form
    76,180.50/105,129.09 = 46,372.50/x
  3. Step 3: Cross multiply
    76,180.50x = 105,129.09 × 46,372.50
  4. Step 4: Simplify right side
    76,180.50x = 4,875,098,726.03
  5. Step 5: Solve for x
    x = 4,875,098,726.03/76,180.50
  6. Step 6: Final answer
    x = 63,994.05

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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.