Home / 81,203,296.30-121,804,652.85-19,791,753.10

Finding the Fourth Proportional to 81,203,296.30, 121,804,652.85 and 19,791,753.10

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Solution

The fourth proportional to 81,203,296.30, 121,804,652.85 and 19,791,753.10 is: 29,687,558.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,203,296.30 : 121,804,652.85 = 19,791,753.10 : x
  2. Step 2: Convert to fraction form
    81,203,296.30/121,804,652.85 = 19,791,753.10/x
  3. Step 3: Cross multiply
    81,203,296.30x = 121,804,652.85 × 19,791,753.10
  4. Step 4: Simplify right side
    81,203,296.30x = 2,410,727,615,638,411.50
  5. Step 5: Solve for x
    x = 2,410,727,615,638,411.50/81,203,296.30
  6. Step 6: Final answer
    x = 29,687,558.58

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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.