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Finding the Fourth Proportional to 200,891.76, 277,417.35 and 129,394.68

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Solution

The fourth proportional to 200,891.76, 277,417.35 and 129,394.68 is: 178,684.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    200,891.76 : 277,417.35 = 129,394.68 : x
  2. Step 2: Convert to fraction form
    200,891.76/277,417.35 = 129,394.68/x
  3. Step 3: Cross multiply
    200,891.76x = 277,417.35 × 129,394.68
  4. Step 4: Simplify right side
    200,891.76x = 35,896,329,229.70
  5. Step 5: Solve for x
    x = 35,896,329,229.70/200,891.76
  6. Step 6: Final answer
    x = 178,684.93

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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.