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Finding the Fourth Proportional to 114,562.80, 171,844.20 and 74,705.40

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Solution

The fourth proportional to 114,562.80, 171,844.20 and 74,705.40 is: 112,058.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    114,562.80 : 171,844.20 = 74,705.40 : x
  2. Step 2: Convert to fraction form
    114,562.80/171,844.20 = 74,705.40/x
  3. Step 3: Cross multiply
    114,562.80x = 171,844.20 × 74,705.40
  4. Step 4: Simplify right side
    114,562.80x = 12,837,689,698.68
  5. Step 5: Solve for x
    x = 12,837,689,698.68/114,562.80
  6. Step 6: Final answer
    x = 112,058.10

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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.