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Finding the Fourth Proportional to 328,838.90, 453,630.42 and 199,743.03

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Solution

The fourth proportional to 328,838.90, 453,630.42 and 199,743.03 is: 275,543.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    328,838.90 : 453,630.42 = 199,743.03 : x
  2. Step 2: Convert to fraction form
    328,838.90/453,630.42 = 199,743.03/x
  3. Step 3: Cross multiply
    328,838.90x = 453,630.42 × 199,743.03
  4. Step 4: Simplify right side
    328,838.90x = 90,609,514,590.97
  5. Step 5: Solve for x
    x = 90,609,514,590.97/328,838.90
  6. Step 6: Final answer
    x = 275,543.79

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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.