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Finding the Fourth Proportional to 318,794.66, 439,804.60 and 189,707.30

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Solution

The fourth proportional to 318,794.66, 439,804.60 and 189,707.30 is: 261,717.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,794.66 : 439,804.60 = 189,707.30 : x
  2. Step 2: Convert to fraction form
    318,794.66/439,804.60 = 189,707.30/x
  3. Step 3: Cross multiply
    318,794.66x = 439,804.60 × 189,707.30
  4. Step 4: Simplify right side
    318,794.66x = 83,434,143,193.58
  5. Step 5: Solve for x
    x = 83,434,143,193.58/318,794.66
  6. Step 6: Final answer
    x = 261,717.51

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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.