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Finding the Fourth Proportional to 318,365.92, 439,197.96 and 190,820.08

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Solution

The fourth proportional to 318,365.92, 439,197.96 and 190,820.08 is: 263,243.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,365.92 : 439,197.96 = 190,820.08 : x
  2. Step 2: Convert to fraction form
    318,365.92/439,197.96 = 190,820.08/x
  3. Step 3: Cross multiply
    318,365.92x = 439,197.96 × 190,820.08
  4. Step 4: Simplify right side
    318,365.92x = 83,807,789,863.04
  5. Step 5: Solve for x
    x = 83,807,789,863.04/318,365.92
  6. Step 6: Final answer
    x = 263,243.60

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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.