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Finding the Fourth Proportional to 99,281.99, 148,839.24 and 43,079.84

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Solution

The fourth proportional to 99,281.99, 148,839.24 and 43,079.84 is: 64,583.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,281.99 : 148,839.24 = 43,079.84 : x
  2. Step 2: Convert to fraction form
    99,281.99/148,839.24 = 43,079.84/x
  3. Step 3: Cross multiply
    99,281.99x = 148,839.24 × 43,079.84
  4. Step 4: Simplify right side
    99,281.99x = 6,411,969,900.73
  5. Step 5: Solve for x
    x = 6,411,969,900.73/99,281.99
  6. Step 6: Final answer
    x = 64,583.42

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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.