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Finding the Fourth Proportional to 114,490.90, 171,656.35 and 67,719.70

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Solution

The fourth proportional to 114,490.90, 171,656.35 and 67,719.70 is: 101,532.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    114,490.90 : 171,656.35 = 67,719.70 : x
  2. Step 2: Convert to fraction form
    114,490.90/171,656.35 = 67,719.70/x
  3. Step 3: Cross multiply
    114,490.90x = 171,656.35 × 67,719.70
  4. Step 4: Simplify right side
    114,490.90x = 11,624,516,525.10
  5. Step 5: Solve for x
    x = 11,624,516,525.10/114,490.90
  6. Step 6: Final answer
    x = 101,532.23

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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.