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Finding the Fourth Proportional to 692,400, 955,514.88 and 374,448

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Solution

The fourth proportional to 692,400, 955,514.88 and 374,448 is: 516,739.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    692,400 : 955,514.88 = 374,448 : x
  2. Step 2: Convert to fraction form
    692,400/955,514.88 = 374,448/x
  3. Step 3: Cross multiply
    692,400x = 955,514.88 × 374,448
  4. Step 4: Simplify right side
    692,400x = 357,790,635,786.24
  5. Step 5: Solve for x
    x = 357,790,635,786.24/692,400
  6. Step 6: Final answer
    x = 516,739.80

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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.