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Finding the Fourth Proportional to 339,374.80, 508,727.40 and 189,686.80

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Solution

The fourth proportional to 339,374.80, 508,727.40 and 189,686.80 is: 284,343.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    339,374.80 : 508,727.40 = 189,686.80 : x
  2. Step 2: Convert to fraction form
    339,374.80/508,727.40 = 189,686.80/x
  3. Step 3: Cross multiply
    339,374.80x = 508,727.40 × 189,686.80
  4. Step 4: Simplify right side
    339,374.80x = 96,498,872,578.32
  5. Step 5: Solve for x
    x = 96,498,872,578.32/339,374.80
  6. Step 6: Final answer
    x = 284,343.07

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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.