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Finding the Fourth Proportional to 117,256.51, 176,120.15 and 69,963.90

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Solution

The fourth proportional to 117,256.51, 176,120.15 and 69,963.90 is: 105,086.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,256.51 : 176,120.15 = 69,963.90 : x
  2. Step 2: Convert to fraction form
    117,256.51/176,120.15 = 69,963.90/x
  3. Step 3: Cross multiply
    117,256.51x = 176,120.15 × 69,963.90
  4. Step 4: Simplify right side
    117,256.51x = 12,322,052,739.76
  5. Step 5: Solve for x
    x = 12,322,052,739.76/117,256.51
  6. Step 6: Final answer
    x = 105,086.30

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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.