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Finding the Fourth Proportional to 76,492.60, 105,529.56 and 44,221.28

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Solution

The fourth proportional to 76,492.60, 105,529.56 and 44,221.28 is: 61,007.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,492.60 : 105,529.56 = 44,221.28 : x
  2. Step 2: Convert to fraction form
    76,492.60/105,529.56 = 44,221.28/x
  3. Step 3: Cross multiply
    76,492.60x = 105,529.56 × 44,221.28
  4. Step 4: Simplify right side
    76,492.60x = 4,666,651,527.56
  5. Step 5: Solve for x
    x = 4,666,651,527.56/76,492.60
  6. Step 6: Final answer
    x = 61,007.88

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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.