Home / 38,540,990.73-53,189,930.78-21,140,698.95

Finding the Fourth Proportional to 38,540,990.73, 53,189,930.78 and 21,140,698.95

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Solution

The fourth proportional to 38,540,990.73, 53,189,930.78 and 21,140,698.95 is: 29,176,009.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,540,990.73 : 53,189,930.78 = 21,140,698.95 : x
  2. Step 2: Convert to fraction form
    38,540,990.73/53,189,930.78 = 21,140,698.95/x
  3. Step 3: Cross multiply
    38,540,990.73x = 53,189,930.78 × 21,140,698.95
  4. Step 4: Simplify right side
    38,540,990.73x = 1,124,472,313,685,615.12
  5. Step 5: Solve for x
    x = 1,124,472,313,685,615.12/38,540,990.73
  6. Step 6: Final answer
    x = 29,176,009.55

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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.