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Finding the Fourth Proportional to 74,466.63, 102,761.28 and 42,613.02

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Solution

The fourth proportional to 74,466.63, 102,761.28 and 42,613.02 is: 58,804.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,466.63 : 102,761.28 = 42,613.02 : x
  2. Step 2: Convert to fraction form
    74,466.63/102,761.28 = 42,613.02/x
  3. Step 3: Cross multiply
    74,466.63x = 102,761.28 × 42,613.02
  4. Step 4: Simplify right side
    74,466.63x = 4,378,968,479.87
  5. Step 5: Solve for x
    x = 4,378,968,479.87/74,466.63
  6. Step 6: Final answer
    x = 58,804.44

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.