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Finding the Fourth Proportional to 42,804.45, 64,201.80 and 16,506.99

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Solution

The fourth proportional to 42,804.45, 64,201.80 and 16,506.99 is: 24,758.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,804.45 : 64,201.80 = 16,506.99 : x
  2. Step 2: Convert to fraction form
    42,804.45/64,201.80 = 16,506.99/x
  3. Step 3: Cross multiply
    42,804.45x = 64,201.80 × 16,506.99
  4. Step 4: Simplify right side
    42,804.45x = 1,059,778,470.58
  5. Step 5: Solve for x
    x = 1,059,778,470.58/42,804.45
  6. Step 6: Final answer
    x = 24,758.61

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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.