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Finding the Fourth Proportional to 99,705.80, 149,558.70 and 95,769.20

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Solution

The fourth proportional to 99,705.80, 149,558.70 and 95,769.20 is: 143,653.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,705.80 : 149,558.70 = 95,769.20 : x
  2. Step 2: Convert to fraction form
    99,705.80/149,558.70 = 95,769.20/x
  3. Step 3: Cross multiply
    99,705.80x = 149,558.70 × 95,769.20
  4. Step 4: Simplify right side
    99,705.80x = 14,323,117,052.04
  5. Step 5: Solve for x
    x = 14,323,117,052.04/99,705.80
  6. Step 6: Final answer
    x = 143,653.80

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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.