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Finding the Fourth Proportional to 133,609.80, 184,384.50 and 76,247.97

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Solution

The fourth proportional to 133,609.80, 184,384.50 and 76,247.97 is: 105,223.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,609.80 : 184,384.50 = 76,247.97 : x
  2. Step 2: Convert to fraction form
    133,609.80/184,384.50 = 76,247.97/x
  3. Step 3: Cross multiply
    133,609.80x = 184,384.50 × 76,247.97
  4. Step 4: Simplify right side
    133,609.80x = 14,058,943,824.47
  5. Step 5: Solve for x
    x = 14,058,943,824.47/133,609.80
  6. Step 6: Final answer
    x = 105,223.90

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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.