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Finding the Fourth Proportional to 173,859.70, 260,789.55 and 162,109.30

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Solution

The fourth proportional to 173,859.70, 260,789.55 and 162,109.30 is: 243,163.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    173,859.70 : 260,789.55 = 162,109.30 : x
  2. Step 2: Convert to fraction form
    173,859.70/260,789.55 = 162,109.30/x
  3. Step 3: Cross multiply
    173,859.70x = 260,789.55 × 162,109.30
  4. Step 4: Simplify right side
    173,859.70x = 42,276,411,397.82
  5. Step 5: Solve for x
    x = 42,276,411,397.82/173,859.70
  6. Step 6: Final answer
    x = 243,163.95

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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.