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Finding the Fourth Proportional to 74,852.64, 112,246.11 and 28,072.71

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Solution

The fourth proportional to 74,852.64, 112,246.11 and 28,072.71 is: 42,096.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,852.64 : 112,246.11 = 28,072.71 : x
  2. Step 2: Convert to fraction form
    74,852.64/112,246.11 = 28,072.71/x
  3. Step 3: Cross multiply
    74,852.64x = 112,246.11 × 28,072.71
  4. Step 4: Simplify right side
    74,852.64x = 3,151,052,494.66
  5. Step 5: Solve for x
    x = 3,151,052,494.66/74,852.64
  6. Step 6: Final answer
    x = 42,096.74

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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.