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Finding the Fourth Proportional to 502,062.21, 753,093.27 and 128,085.21

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Solution

The fourth proportional to 502,062.21, 753,093.27 and 128,085.21 is: 192,127.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    502,062.21 : 753,093.27 = 128,085.21 : x
  2. Step 2: Convert to fraction form
    502,062.21/753,093.27 = 128,085.21/x
  3. Step 3: Cross multiply
    502,062.21x = 753,093.27 × 128,085.21
  4. Step 4: Simplify right side
    502,062.21x = 96,460,109,637.54
  5. Step 5: Solve for x
    x = 96,460,109,637.54/502,062.21
  6. Step 6: Final answer
    x = 192,127.80

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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.