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Finding the Fourth Proportional to 170,405.64, 255,530.21 and 58,040.15

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Solution

The fourth proportional to 170,405.64, 255,530.21 and 58,040.15 is: 87,033.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    170,405.64 : 255,530.21 = 58,040.15 : x
  2. Step 2: Convert to fraction form
    170,405.64/255,530.21 = 58,040.15/x
  3. Step 3: Cross multiply
    170,405.64x = 255,530.21 × 58,040.15
  4. Step 4: Simplify right side
    170,405.64x = 14,831,010,150.08
  5. Step 5: Solve for x
    x = 14,831,010,150.08/170,405.64
  6. Step 6: Final answer
    x = 87,033.56

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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.