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Finding the Fourth Proportional to 91,773,309.60, 137,659,964.40 and 40,601,008.80

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Solution

The fourth proportional to 91,773,309.60, 137,659,964.40 and 40,601,008.80 is: 60,901,513.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,773,309.60 : 137,659,964.40 = 40,601,008.80 : x
  2. Step 2: Convert to fraction form
    91,773,309.60/137,659,964.40 = 40,601,008.80/x
  3. Step 3: Cross multiply
    91,773,309.60x = 137,659,964.40 × 40,601,008.80
  4. Step 4: Simplify right side
    91,773,309.60x = 5,589,133,426,012,087
  5. Step 5: Solve for x
    x = 5,589,133,426,012,087/91,773,309.60
  6. Step 6: Final answer
    x = 60,901,513.20

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.