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Finding the Fourth Proportional to 40,699.30, 61,040.72 and 11,114.68

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Solution

The fourth proportional to 40,699.30, 61,040.72 and 11,114.68 is: 16,669.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,699.30 : 61,040.72 = 11,114.68 : x
  2. Step 2: Convert to fraction form
    40,699.30/61,040.72 = 11,114.68/x
  3. Step 3: Cross multiply
    40,699.30x = 61,040.72 × 11,114.68
  4. Step 4: Simplify right side
    40,699.30x = 678,448,069.77
  5. Step 5: Solve for x
    x = 678,448,069.77/40,699.30
  6. Step 6: Final answer
    x = 16,669.77

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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.