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Finding the Fourth Proportional to 74,702.58, 103,089.56 and 41,168.58

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Solution

The fourth proportional to 74,702.58, 103,089.56 and 41,168.58 is: 56,812.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,702.58 : 103,089.56 = 41,168.58 : x
  2. Step 2: Convert to fraction form
    74,702.58/103,089.56 = 41,168.58/x
  3. Step 3: Cross multiply
    74,702.58x = 103,089.56 × 41,168.58
  4. Step 4: Simplify right side
    74,702.58x = 4,244,050,798.02
  5. Step 5: Solve for x
    x = 4,244,050,798.02/74,702.58
  6. Step 6: Final answer
    x = 56,812.64

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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.