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Finding the Fourth Proportional to 99,811.80, 149,717.70 and 95,875.20

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Solution

The fourth proportional to 99,811.80, 149,717.70 and 95,875.20 is: 143,812.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,811.80 : 149,717.70 = 95,875.20 : x
  2. Step 2: Convert to fraction form
    99,811.80/149,717.70 = 95,875.20/x
  3. Step 3: Cross multiply
    99,811.80x = 149,717.70 × 95,875.20
  4. Step 4: Simplify right side
    99,811.80x = 14,354,214,431.04
  5. Step 5: Solve for x
    x = 14,354,214,431.04/99,811.80
  6. Step 6: Final answer
    x = 143,812.80

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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.