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Finding the Fourth Proportional to 173,684.43, 260,349.80 and 78,981.84

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Solution

The fourth proportional to 173,684.43, 260,349.80 and 78,981.84 is: 118,392.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    173,684.43 : 260,349.80 = 78,981.84 : x
  2. Step 2: Convert to fraction form
    173,684.43/260,349.80 = 78,981.84/x
  3. Step 3: Cross multiply
    173,684.43x = 260,349.80 × 78,981.84
  4. Step 4: Simplify right side
    173,684.43x = 20,562,905,852.72
  5. Step 5: Solve for x
    x = 20,562,905,852.72/173,684.43
  6. Step 6: Final answer
    x = 118,392.34

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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.