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Finding the Fourth Proportional to 170,042.10, 255,063.15 and 76,730.10

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Solution

The fourth proportional to 170,042.10, 255,063.15 and 76,730.10 is: 115,095.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    170,042.10 : 255,063.15 = 76,730.10 : x
  2. Step 2: Convert to fraction form
    170,042.10/255,063.15 = 76,730.10/x
  3. Step 3: Cross multiply
    170,042.10x = 255,063.15 × 76,730.10
  4. Step 4: Simplify right side
    170,042.10x = 19,571,021,005.82
  5. Step 5: Solve for x
    x = 19,571,021,005.82/170,042.10
  6. Step 6: Final answer
    x = 115,095.15

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.