Home / 38,561,823.75-53,215,417.82-20,920,725.39

Finding the Fourth Proportional to 38,561,823.75, 53,215,417.82 and 20,920,725.39

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Solution

The fourth proportional to 38,561,823.75, 53,215,417.82 and 20,920,725.39 is: 28,870,655.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,561,823.75 : 53,215,417.82 = 20,920,725.39 : x
  2. Step 2: Convert to fraction form
    38,561,823.75/53,215,417.82 = 20,920,725.39/x
  3. Step 3: Cross multiply
    38,561,823.75x = 53,215,417.82 × 20,920,725.39
  4. Step 4: Simplify right side
    38,561,823.75x = 1,113,305,142,778,634.25
  5. Step 5: Solve for x
    x = 1,113,305,142,778,634.25/38,561,823.75
  6. Step 6: Final answer
    x = 28,870,655.86

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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.