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Finding the Fourth Proportional to 173,835.40, 260,558.70 and 73,978.60

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Solution

The fourth proportional to 173,835.40, 260,558.70 and 73,978.60 is: 110,885.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    173,835.40 : 260,558.70 = 73,978.60 : x
  2. Step 2: Convert to fraction form
    173,835.40/260,558.70 = 73,978.60/x
  3. Step 3: Cross multiply
    173,835.40x = 260,558.70 × 73,978.60
  4. Step 4: Simplify right side
    173,835.40x = 19,275,767,843.82
  5. Step 5: Solve for x
    x = 19,275,767,843.82/173,835.40
  6. Step 6: Final answer
    x = 110,885.17

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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.