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Finding the Fourth Proportional to 200,394.78, 276,732.12 and 128,898.92

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Solution

The fourth proportional to 200,394.78, 276,732.12 and 128,898.92 is: 178,001.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    200,394.78 : 276,732.12 = 128,898.92 : x
  2. Step 2: Convert to fraction form
    200,394.78/276,732.12 = 128,898.92/x
  3. Step 3: Cross multiply
    200,394.78x = 276,732.12 × 128,898.92
  4. Step 4: Simplify right side
    200,394.78x = 35,670,471,397.31
  5. Step 5: Solve for x
    x = 35,670,471,397.31/200,394.78
  6. Step 6: Final answer
    x = 178,001.00

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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.