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Finding the Fourth Proportional to 114,580.80, 171,871.20 and 74,723.40

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Solution

The fourth proportional to 114,580.80, 171,871.20 and 74,723.40 is: 112,085.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    114,580.80 : 171,871.20 = 74,723.40 : x
  2. Step 2: Convert to fraction form
    114,580.80/171,871.20 = 74,723.40/x
  3. Step 3: Cross multiply
    114,580.80x = 171,871.20 × 74,723.40
  4. Step 4: Simplify right side
    114,580.80x = 12,842,800,426.08
  5. Step 5: Solve for x
    x = 12,842,800,426.08/114,580.80
  6. Step 6: Final answer
    x = 112,085.10

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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.