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Finding the Fourth Proportional to 174,705.72, 262,051.20 and 79,881

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Solution

The fourth proportional to 174,705.72, 262,051.20 and 79,881 is: 119,818.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    174,705.72 : 262,051.20 = 79,881 : x
  2. Step 2: Convert to fraction form
    174,705.72/262,051.20 = 79,881/x
  3. Step 3: Cross multiply
    174,705.72x = 262,051.20 × 79,881
  4. Step 4: Simplify right side
    174,705.72x = 20,932,911,907.20
  5. Step 5: Solve for x
    x = 20,932,911,907.20/174,705.72
  6. Step 6: Final answer
    x = 119,818.13

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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.