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Finding the Fourth Proportional to 515,587.38, 711,596.10 and 300,727.44

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Solution

The fourth proportional to 515,587.38, 711,596.10 and 300,727.44 is: 415,053.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    515,587.38 : 711,596.10 = 300,727.44 : x
  2. Step 2: Convert to fraction form
    515,587.38/711,596.10 = 300,727.44/x
  3. Step 3: Cross multiply
    515,587.38x = 711,596.10 × 300,727.44
  4. Step 4: Simplify right side
    515,587.38x = 213,996,473,466.98
  5. Step 5: Solve for x
    x = 213,996,473,466.98/515,587.38
  6. Step 6: Final answer
    x = 415,053.75

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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.