Home / 39,311,999.80-58,967,999.70-20,180,123.80

Finding the Fourth Proportional to 39,311,999.80, 58,967,999.70 and 20,180,123.80

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Solution

The fourth proportional to 39,311,999.80, 58,967,999.70 and 20,180,123.80 is: 30,270,185.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,311,999.80 : 58,967,999.70 = 20,180,123.80 : x
  2. Step 2: Convert to fraction form
    39,311,999.80/58,967,999.70 = 20,180,123.80/x
  3. Step 3: Cross multiply
    39,311,999.80x = 58,967,999.70 × 20,180,123.80
  4. Step 4: Simplify right side
    39,311,999.80x = 1,189,981,534,184,363
  5. Step 5: Solve for x
    x = 1,189,981,534,184,363/39,311,999.80
  6. Step 6: Final answer
    x = 30,270,185.70

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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.