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Finding the Fourth Proportional to 554,711,743.58, 765,502,952.26 and 300,393,543.78

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Solution

The fourth proportional to 554,711,743.58, 765,502,952.26 and 300,393,543.78 is: 414,543,494.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    554,711,743.58 : 765,502,952.26 = 300,393,543.78 : x
  2. Step 2: Convert to fraction form
    554,711,743.58/765,502,952.26 = 300,393,543.78/x
  3. Step 3: Cross multiply
    554,711,743.58x = 765,502,952.26 × 300,393,543.78
  4. Step 4: Simplify right side
    554,711,743.58x = 229,952,144,603,433,536
  5. Step 5: Solve for x
    x = 229,952,144,603,433,536/554,711,743.58
  6. Step 6: Final answer
    x = 414,543,494.46

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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.