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Finding the Fourth Proportional to 128,843.51, 193,262.09 and 49,957.76

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Solution

The fourth proportional to 128,843.51, 193,262.09 and 49,957.76 is: 74,935.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,843.51 : 193,262.09 = 49,957.76 : x
  2. Step 2: Convert to fraction form
    128,843.51/193,262.09 = 49,957.76/x
  3. Step 3: Cross multiply
    128,843.51x = 193,262.09 × 49,957.76
  4. Step 4: Simplify right side
    128,843.51x = 9,654,941,109.32
  5. Step 5: Solve for x
    x = 9,654,941,109.32/128,843.51
  6. Step 6: Final answer
    x = 74,935.41

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.