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Finding the Fourth Proportional to 155,886.77, 215,010.14 and 119,175.95

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Solution

The fourth proportional to 155,886.77, 215,010.14 and 119,175.95 is: 164,375.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,886.77 : 215,010.14 = 119,175.95 : x
  2. Step 2: Convert to fraction form
    155,886.77/215,010.14 = 119,175.95/x
  3. Step 3: Cross multiply
    155,886.77x = 215,010.14 × 119,175.95
  4. Step 4: Simplify right side
    155,886.77x = 25,624,036,023.20
  5. Step 5: Solve for x
    x = 25,624,036,023.20/155,886.77
  6. Step 6: Final answer
    x = 164,375.96

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.