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Finding the Fourth Proportional to 115,009.70, 172,411.95 and 44,872.70

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Solution

The fourth proportional to 115,009.70, 172,411.95 and 44,872.70 is: 67,269.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,009.70 : 172,411.95 = 44,872.70 : x
  2. Step 2: Convert to fraction form
    115,009.70/172,411.95 = 44,872.70/x
  3. Step 3: Cross multiply
    115,009.70x = 172,411.95 × 44,872.70
  4. Step 4: Simplify right side
    115,009.70x = 7,736,589,708.77
  5. Step 5: Solve for x
    x = 7,736,589,708.77/115,009.70
  6. Step 6: Final answer
    x = 67,269.02

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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.