Home / 8,128,431.33-11,218,461.71-5,189,504.28

Finding the Fourth Proportional to 8,128,431.33, 11,218,461.71 and 5,189,504.28

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Solution

The fourth proportional to 8,128,431.33, 11,218,461.71 and 5,189,504.28 is: 7,162,298.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,128,431.33 : 11,218,461.71 = 5,189,504.28 : x
  2. Step 2: Convert to fraction form
    8,128,431.33/11,218,461.71 = 5,189,504.28/x
  3. Step 3: Cross multiply
    8,128,431.33x = 11,218,461.71 × 5,189,504.28
  4. Step 4: Simplify right side
    8,128,431.33x = 58,218,255,033,113.60
  5. Step 5: Solve for x
    x = 58,218,255,033,113.60/8,128,431.33
  6. Step 6: Final answer
    x = 7,162,298.93

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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.