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Finding the Fourth Proportional to 73,072.98, 100,840.86 and 40,807.44

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Solution

The fourth proportional to 73,072.98, 100,840.86 and 40,807.44 is: 56,314.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,072.98 : 100,840.86 = 40,807.44 : x
  2. Step 2: Convert to fraction form
    73,072.98/100,840.86 = 40,807.44/x
  3. Step 3: Cross multiply
    73,072.98x = 100,840.86 × 40,807.44
  4. Step 4: Simplify right side
    73,072.98x = 4,115,057,344.00
  5. Step 5: Solve for x
    x = 4,115,057,344.00/73,072.98
  6. Step 6: Final answer
    x = 56,314.35

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1.5x scale

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.