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Finding the Fourth Proportional to 481,514.58, 722,101.49 and 139,886.93

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Solution

The fourth proportional to 481,514.58, 722,101.49 and 139,886.93 is: 209,780.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    481,514.58 : 722,101.49 = 139,886.93 : x
  2. Step 2: Convert to fraction form
    481,514.58/722,101.49 = 139,886.93/x
  3. Step 3: Cross multiply
    481,514.58x = 722,101.49 × 139,886.93
  4. Step 4: Simplify right side
    481,514.58x = 101,012,558,401.22
  5. Step 5: Solve for x
    x = 101,012,558,401.22/481,514.58
  6. Step 6: Final answer
    x = 209,780.89

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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.