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Finding the Fourth Proportional to 74,596.52, 102,945.35 and 40,607.21

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Solution

The fourth proportional to 74,596.52, 102,945.35 and 40,607.21 is: 56,039.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,596.52 : 102,945.35 = 40,607.21 : x
  2. Step 2: Convert to fraction form
    74,596.52/102,945.35 = 40,607.21/x
  3. Step 3: Cross multiply
    74,596.52x = 102,945.35 × 40,607.21
  4. Step 4: Simplify right side
    74,596.52x = 4,180,323,445.97
  5. Step 5: Solve for x
    x = 4,180,323,445.97/74,596.52
  6. Step 6: Final answer
    x = 56,039.12

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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.