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Finding the Fourth Proportional to 620,601.12, 930,893.04 and 199,879.20

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Solution

The fourth proportional to 620,601.12, 930,893.04 and 199,879.20 is: 299,816.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    620,601.12 : 930,893.04 = 199,879.20 : x
  2. Step 2: Convert to fraction form
    620,601.12/930,893.04 = 199,879.20/x
  3. Step 3: Cross multiply
    620,601.12x = 930,893.04 × 199,879.20
  4. Step 4: Simplify right side
    620,601.12x = 186,066,156,120.77
  5. Step 5: Solve for x
    x = 186,066,156,120.77/620,601.12
  6. Step 6: Final answer
    x = 299,816.02

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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.