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Finding the Fourth Proportional to 62,803.58, 86,647.51 and 38,921.54

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Solution

The fourth proportional to 62,803.58, 86,647.51 and 38,921.54 is: 53,698.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    62,803.58 : 86,647.51 = 38,921.54 : x
  2. Step 2: Convert to fraction form
    62,803.58/86,647.51 = 38,921.54/x
  3. Step 3: Cross multiply
    62,803.58x = 86,647.51 × 38,921.54
  4. Step 4: Simplify right side
    62,803.58x = 3,372,454,526.37
  5. Step 5: Solve for x
    x = 3,372,454,526.37/62,803.58
  6. Step 6: Final answer
    x = 53,698.44

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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.