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Finding the Fourth Proportional to 554,712.64, 765,502.92 and 300,063.24

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Solution

The fourth proportional to 554,712.64, 765,502.92 and 300,063.24 is: 414,086.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    554,712.64 : 765,502.92 = 300,063.24 : x
  2. Step 2: Convert to fraction form
    554,712.64/765,502.92 = 300,063.24/x
  3. Step 3: Cross multiply
    554,712.64x = 765,502.92 × 300,063.24
  4. Step 4: Simplify right side
    554,712.64x = 229,699,286,404.66
  5. Step 5: Solve for x
    x = 229,699,286,404.66/554,712.64
  6. Step 6: Final answer
    x = 414,086.99

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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.