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Finding the Fourth Proportional to 62,578.58, 86,357.34 and 38,698.97

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Solution

The fourth proportional to 62,578.58, 86,357.34 and 38,698.97 is: 53,403.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    62,578.58 : 86,357.34 = 38,698.97 : x
  2. Step 2: Convert to fraction form
    62,578.58/86,357.34 = 38,698.97/x
  3. Step 3: Cross multiply
    62,578.58x = 86,357.34 × 38,698.97
  4. Step 4: Simplify right side
    62,578.58x = 3,341,939,678.15
  5. Step 5: Solve for x
    x = 3,341,939,678.15/62,578.58
  6. Step 6: Final answer
    x = 53,403.90

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1.5x scale

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.