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Finding the Fourth Proportional to 520,863.76, 781,373.62 and 188,517.52

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Solution

The fourth proportional to 520,863.76, 781,373.62 and 188,517.52 is: 282,804.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    520,863.76 : 781,373.62 = 188,517.52 : x
  2. Step 2: Convert to fraction form
    520,863.76/781,373.62 = 188,517.52/x
  3. Step 3: Cross multiply
    520,863.76x = 781,373.62 × 188,517.52
  4. Step 4: Simplify right side
    520,863.76x = 147,302,617,035.82
  5. Step 5: Solve for x
    x = 147,302,617,035.82/520,863.76
  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.