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Finding the Fourth Proportional to 173,709.90, 260,389.43 and 83,620.31

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Solution

The fourth proportional to 173,709.90, 260,389.43 and 83,620.31 is: 125,346.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    173,709.90 : 260,389.43 = 83,620.31 : x
  2. Step 2: Convert to fraction form
    173,709.90/260,389.43 = 83,620.31/x
  3. Step 3: Cross multiply
    173,709.90x = 260,389.43 × 83,620.31
  4. Step 4: Simplify right side
    173,709.90x = 21,773,843,137.27
  5. Step 5: Solve for x
    x = 21,773,843,137.27/173,709.90
  6. Step 6: Final answer
    x = 125,346.01

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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.