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Finding the Fourth Proportional to 200,390.52, 276,726.24 and 128,894.66

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Solution

The fourth proportional to 200,390.52, 276,726.24 and 128,894.66 is: 177,995.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    200,390.52 : 276,726.24 = 128,894.66 : x
  2. Step 2: Convert to fraction form
    200,390.52/276,726.24 = 128,894.66/x
  3. Step 3: Cross multiply
    200,390.52x = 276,726.24 × 128,894.66
  4. Step 4: Simplify right side
    200,390.52x = 35,668,533,234.25
  5. Step 5: Solve for x
    x = 35,668,533,234.25/200,390.52
  6. Step 6: Final answer
    x = 177,995.11

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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.