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Finding the Fourth Proportional to 200,085.54, 276,218.28 and 154,660.74

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Solution

The fourth proportional to 200,085.54, 276,218.28 and 154,660.74 is: 213,509.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    200,085.54 : 276,218.28 = 154,660.74 : x
  2. Step 2: Convert to fraction form
    200,085.54/276,218.28 = 154,660.74/x
  3. Step 3: Cross multiply
    200,085.54x = 276,218.28 × 154,660.74
  4. Step 4: Simplify right side
    200,085.54x = 42,720,123,586.33
  5. Step 5: Solve for x
    x = 42,720,123,586.33/200,085.54
  6. Step 6: Final answer
    x = 213,509.30

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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.