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Finding the Fourth Proportional to 84,783.43, 127,201.88 and 53,215.45

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Solution

The fourth proportional to 84,783.43, 127,201.88 and 53,215.45 is: 79,839.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,783.43 : 127,201.88 = 53,215.45 : x
  2. Step 2: Convert to fraction form
    84,783.43/127,201.88 = 53,215.45/x
  3. Step 3: Cross multiply
    84,783.43x = 127,201.88 × 53,215.45
  4. Step 4: Simplify right side
    84,783.43x = 6,769,105,285.05
  5. Step 5: Solve for x
    x = 6,769,105,285.05/84,783.43
  6. Step 6: Final answer
    x = 79,839.96

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.