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Finding the Fourth Proportional to 99,679.76, 149,527.94 and 28,602.26

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Solution

The fourth proportional to 99,679.76, 149,527.94 and 28,602.26 is: 42,905.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,679.76 : 149,527.94 = 28,602.26 : x
  2. Step 2: Convert to fraction form
    99,679.76/149,527.94 = 28,602.26/x
  3. Step 3: Cross multiply
    99,679.76x = 149,527.94 × 28,602.26
  4. Step 4: Simplify right side
    99,679.76x = 4,276,836,126.49
  5. Step 5: Solve for x
    x = 4,276,836,126.49/99,679.76
  6. Step 6: Final answer
    x = 42,905.76

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.