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Finding the Fourth Proportional to 520,863.75, 781,373.63 and 188,517.51

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Solution

The fourth proportional to 520,863.75, 781,373.63 and 188,517.51 is: 282,804.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    520,863.75 : 781,373.63 = 188,517.51 : x
  2. Step 2: Convert to fraction form
    520,863.75/781,373.63 = 188,517.51/x
  3. Step 3: Cross multiply
    520,863.75x = 781,373.63 × 188,517.51
  4. Step 4: Simplify right side
    520,863.75x = 147,302,611,107.26
  5. Step 5: Solve for x
    x = 147,302,611,107.26/520,863.75
  6. Step 6: Final answer
    x = 282,804.50

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1.5x scale

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.