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Finding the Fourth Proportional to 98,070.80, 146,906.53 and 89,896.79

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Solution

The fourth proportional to 98,070.80, 146,906.53 and 89,896.79 is: 134,662.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,070.80 : 146,906.53 = 89,896.79 : x
  2. Step 2: Convert to fraction form
    98,070.80/146,906.53 = 89,896.79/x
  3. Step 3: Cross multiply
    98,070.80x = 146,906.53 × 89,896.79
  4. Step 4: Simplify right side
    98,070.80x = 13,206,425,477.04
  5. Step 5: Solve for x
    x = 13,206,425,477.04/98,070.80
  6. Step 6: Final answer
    x = 134,662.16

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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.