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Finding the Fourth Proportional to 399,998.65, 551,987.54 and 236,663.57

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Solution

The fourth proportional to 399,998.65, 551,987.54 and 236,663.57 is: 326,589.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    399,998.65 : 551,987.54 = 236,663.57 : x
  2. Step 2: Convert to fraction form
    399,998.65/551,987.54 = 236,663.57/x
  3. Step 3: Cross multiply
    399,998.65x = 551,987.54 × 236,663.57
  4. Step 4: Simplify right side
    399,998.65x = 130,635,342,008.57
  5. Step 5: Solve for x
    x = 130,635,342,008.57/399,998.65
  6. Step 6: Final answer
    x = 326,589.46

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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.