Home / 38,620,399.77-53,296,171.20-21,217,865.76

Finding the Fourth Proportional to 38,620,399.77, 53,296,171.20 and 21,217,865.76

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Solution

The fourth proportional to 38,620,399.77, 53,296,171.20 and 21,217,865.76 is: 29,280,665.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,620,399.77 : 53,296,171.20 = 21,217,865.76 : x
  2. Step 2: Convert to fraction form
    38,620,399.77/53,296,171.20 = 21,217,865.76/x
  3. Step 3: Cross multiply
    38,620,399.77x = 53,296,171.20 × 21,217,865.76
  4. Step 4: Simplify right side
    38,620,399.77x = 1,130,831,006,043,578.25
  5. Step 5: Solve for x
    x = 1,130,831,006,043,578.25/38,620,399.77
  6. Step 6: Final answer
    x = 29,280,665.47

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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.