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Finding the Fourth Proportional to 74,852.66, 103,296.94 and 40,861.90

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Solution

The fourth proportional to 74,852.66, 103,296.94 and 40,861.90 is: 56,389.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,852.66 : 103,296.94 = 40,861.90 : x
  2. Step 2: Convert to fraction form
    74,852.66/103,296.94 = 40,861.90/x
  3. Step 3: Cross multiply
    74,852.66x = 103,296.94 × 40,861.90
  4. Step 4: Simplify right side
    74,852.66x = 4,220,909,259.55
  5. Step 5: Solve for x
    x = 4,220,909,259.55/74,852.66
  6. Step 6: Final answer
    x = 56,389.57

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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.