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Finding the Fourth Proportional to 170,983.18, 256,479.16 and 81,004.82

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Solution

The fourth proportional to 170,983.18, 256,479.16 and 81,004.82 is: 121,509.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    170,983.18 : 256,479.16 = 81,004.82 : x
  2. Step 2: Convert to fraction form
    170,983.18/256,479.16 = 81,004.82/x
  3. Step 3: Cross multiply
    170,983.18x = 256,479.16 × 81,004.82
  4. Step 4: Simplify right side
    170,983.18x = 20,776,047,577.88
  5. Step 5: Solve for x
    x = 20,776,047,577.88/170,983.18
  6. Step 6: Final answer
    x = 121,509.31

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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.