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Finding the Fourth Proportional to 74,957.58, 103,440.24 and 40,965.66

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Solution

The fourth proportional to 74,957.58, 103,440.24 and 40,965.66 is: 56,531.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,957.58 : 103,440.24 = 40,965.66 : x
  2. Step 2: Convert to fraction form
    74,957.58/103,440.24 = 40,965.66/x
  3. Step 3: Cross multiply
    74,957.58x = 103,440.24 × 40,965.66
  4. Step 4: Simplify right side
    74,957.58x = 4,237,497,702.16
  5. Step 5: Solve for x
    x = 4,237,497,702.16/74,957.58
  6. Step 6: Final answer
    x = 56,531.94

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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.