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Finding the Fourth Proportional to 328,279.57, 453,138.89 and 192,357.52

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Solution

The fourth proportional to 328,279.57, 453,138.89 and 192,357.52 is: 265,519.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    328,279.57 : 453,138.89 = 192,357.52 : x
  2. Step 2: Convert to fraction form
    328,279.57/453,138.89 = 192,357.52/x
  3. Step 3: Cross multiply
    328,279.57x = 453,138.89 × 192,357.52
  4. Step 4: Simplify right side
    328,279.57x = 87,164,671,001.32
  5. Step 5: Solve for x
    x = 87,164,671,001.32/328,279.57
  6. Step 6: Final answer
    x = 265,519.64

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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.