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Finding the Fourth Proportional to 208,156.87, 287,263.43 and 127,568.82

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Solution

The fourth proportional to 208,156.87, 287,263.43 and 127,568.82 is: 176,049.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,156.87 : 287,263.43 = 127,568.82 : x
  2. Step 2: Convert to fraction form
    208,156.87/287,263.43 = 127,568.82/x
  3. Step 3: Cross multiply
    208,156.87x = 287,263.43 × 127,568.82
  4. Step 4: Simplify right side
    208,156.87x = 36,645,857,831.33
  5. Step 5: Solve for x
    x = 36,645,857,831.33/208,156.87
  6. Step 6: Final answer
    x = 176,049.24

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.