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Finding the Fourth Proportional to 328,888.40, 453,721.16 and 192,853.28

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Solution

The fourth proportional to 328,888.40, 453,721.16 and 192,853.28 is: 266,052.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    328,888.40 : 453,721.16 = 192,853.28 : x
  2. Step 2: Convert to fraction form
    328,888.40/453,721.16 = 192,853.28/x
  3. Step 3: Cross multiply
    328,888.40x = 453,721.16 × 192,853.28
  4. Step 4: Simplify right side
    328,888.40x = 87,501,613,911.40
  5. Step 5: Solve for x
    x = 87,501,613,911.40/328,888.40
  6. Step 6: Final answer
    x = 266,052.60

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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.