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Finding the Fourth Proportional to 98,231.66, 147,450.54 and 87,058.48

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Solution

The fourth proportional to 98,231.66, 147,450.54 and 87,058.48 is: 130,679.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,231.66 : 147,450.54 = 87,058.48 : x
  2. Step 2: Convert to fraction form
    98,231.66/147,450.54 = 87,058.48/x
  3. Step 3: Cross multiply
    98,231.66x = 147,450.54 × 87,058.48
  4. Step 4: Simplify right side
    98,231.66x = 12,836,819,887.58
  5. Step 5: Solve for x
    x = 12,836,819,887.58/98,231.66
  6. Step 6: Final answer
    x = 130,679.05

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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.