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Finding the Fourth Proportional to 60,783.99, 83,926.34 and 39,286.45

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Solution

The fourth proportional to 60,783.99, 83,926.34 and 39,286.45 is: 54,244.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,783.99 : 83,926.34 = 39,286.45 : x
  2. Step 2: Convert to fraction form
    60,783.99/83,926.34 = 39,286.45/x
  3. Step 3: Cross multiply
    60,783.99x = 83,926.34 × 39,286.45
  4. Step 4: Simplify right side
    60,783.99x = 3,297,168,236.88
  5. Step 5: Solve for x
    x = 3,297,168,236.88/60,783.99
  6. Step 6: Final answer
    x = 54,244.03

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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.