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Finding the Fourth Proportional to 173,405.80, 260,108.70 and 61,212.70

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Solution

The fourth proportional to 173,405.80, 260,108.70 and 61,212.70 is: 91,819.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    173,405.80 : 260,108.70 = 61,212.70 : x
  2. Step 2: Convert to fraction form
    173,405.80/260,108.70 = 61,212.70/x
  3. Step 3: Cross multiply
    173,405.80x = 260,108.70 × 61,212.70
  4. Step 4: Simplify right side
    173,405.80x = 15,921,955,820.49
  5. Step 5: Solve for x
    x = 15,921,955,820.49/173,405.80
  6. Step 6: Final answer
    x = 91,819.05

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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.