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Finding the Fourth Proportional to 124,699.70, 187,043.88 and 45,808.13

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Solution

The fourth proportional to 124,699.70, 187,043.88 and 45,808.13 is: 68,710.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,699.70 : 187,043.88 = 45,808.13 : x
  2. Step 2: Convert to fraction form
    124,699.70/187,043.88 = 45,808.13/x
  3. Step 3: Cross multiply
    124,699.70x = 187,043.88 × 45,808.13
  4. Step 4: Simplify right side
    124,699.70x = 8,568,131,010.13
  5. Step 5: Solve for x
    x = 8,568,131,010.13/124,699.70
  6. Step 6: Final answer
    x = 68,710.12

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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.