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Finding the Fourth Proportional to 69,858.99, 96,405.39 and 38,028.15

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Solution

The fourth proportional to 69,858.99, 96,405.39 and 38,028.15 is: 52,478.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,858.99 : 96,405.39 = 38,028.15 : x
  2. Step 2: Convert to fraction form
    69,858.99/96,405.39 = 38,028.15/x
  3. Step 3: Cross multiply
    69,858.99x = 96,405.39 × 38,028.15
  4. Step 4: Simplify right side
    69,858.99x = 3,666,118,631.73
  5. Step 5: Solve for x
    x = 3,666,118,631.73/69,858.99
  6. Step 6: Final answer
    x = 52,478.84

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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.