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Finding the Fourth Proportional to 114,780.92, 172,181.28 and 31,674.92

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Solution

The fourth proportional to 114,780.92, 172,181.28 and 31,674.92 is: 47,515.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    114,780.92 : 172,181.28 = 31,674.92 : x
  2. Step 2: Convert to fraction form
    114,780.92/172,181.28 = 31,674.92/x
  3. Step 3: Cross multiply
    114,780.92x = 172,181.28 × 31,674.92
  4. Step 4: Simplify right side
    114,780.92x = 5,453,828,269.50
  5. Step 5: Solve for x
    x = 5,453,828,269.50/114,780.92
  6. Step 6: Final answer
    x = 47,515.11

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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.