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Finding the Fourth Proportional to 74,846,496.80, 112,269,745.20 and 42,485,895.20

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Solution

The fourth proportional to 74,846,496.80, 112,269,745.20 and 42,485,895.20 is: 63,728,842.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,846,496.80 : 112,269,745.20 = 42,485,895.20 : x
  2. Step 2: Convert to fraction form
    74,846,496.80/112,269,745.20 = 42,485,895.20/x
  3. Step 3: Cross multiply
    74,846,496.80x = 112,269,745.20 × 42,485,895.20
  4. Step 4: Simplify right side
    74,846,496.80x = 4,769,880,628,697,904
  5. Step 5: Solve for x
    x = 4,769,880,628,697,904/74,846,496.80
  6. Step 6: Final answer
    x = 63,728,842.80

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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.