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Finding the Fourth Proportional to 173,896.90, 260,699.55 and 90,790.90

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Solution

The fourth proportional to 173,896.90, 260,699.55 and 90,790.90 is: 136,110.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    173,896.90 : 260,699.55 = 90,790.90 : x
  2. Step 2: Convert to fraction form
    173,896.90/260,699.55 = 90,790.90/x
  3. Step 3: Cross multiply
    173,896.90x = 260,699.55 × 90,790.90
  4. Step 4: Simplify right side
    173,896.90x = 23,669,146,774.10
  5. Step 5: Solve for x
    x = 23,669,146,774.10/173,896.90
  6. Step 6: Final answer
    x = 136,110.23

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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.