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Finding the Fourth Proportional to 99,795.60, 149,693.40 and 76,467.60

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Solution

The fourth proportional to 99,795.60, 149,693.40 and 76,467.60 is: 114,701.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,795.60 : 149,693.40 = 76,467.60 : x
  2. Step 2: Convert to fraction form
    99,795.60/149,693.40 = 76,467.60/x
  3. Step 3: Cross multiply
    99,795.60x = 149,693.40 × 76,467.60
  4. Step 4: Simplify right side
    99,795.60x = 11,446,695,033.84
  5. Step 5: Solve for x
    x = 11,446,695,033.84/99,795.60
  6. Step 6: Final answer
    x = 114,701.40

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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.