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Finding the Fourth Proportional to 124,699.44, 187,123.68 and 45,821.64

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Solution

The fourth proportional to 124,699.44, 187,123.68 and 45,821.64 is: 68,759.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,699.44 : 187,123.68 = 45,821.64 : x
  2. Step 2: Convert to fraction form
    124,699.44/187,123.68 = 45,821.64/x
  3. Step 3: Cross multiply
    124,699.44x = 187,123.68 × 45,821.64
  4. Step 4: Simplify right side
    124,699.44x = 8,574,313,026.89
  5. Step 5: Solve for x
    x = 8,574,313,026.89/124,699.44
  6. Step 6: Final answer
    x = 68,759.84

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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.