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Finding the Fourth Proportional to 655,470.44, 904,514.80 and 368,981

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Solution

The fourth proportional to 655,470.44, 904,514.80 and 368,981 is: 509,174.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    655,470.44 : 904,514.80 = 368,981 : x
  2. Step 2: Convert to fraction form
    655,470.44/904,514.80 = 368,981/x
  3. Step 3: Cross multiply
    655,470.44x = 904,514.80 × 368,981
  4. Step 4: Simplify right side
    655,470.44x = 333,748,775,418.80
  5. Step 5: Solve for x
    x = 333,748,775,418.80/655,470.44
  6. Step 6: Final answer
    x = 509,174.41

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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.