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Finding the Fourth Proportional to 611,755,412.20, 917,505,591.90 and 223,761,005.80

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Solution

The fourth proportional to 611,755,412.20, 917,505,591.90 and 223,761,005.80 is: 335,594,863.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    611,755,412.20 : 917,505,591.90 = 223,761,005.80 : x
  2. Step 2: Convert to fraction form
    611,755,412.20/917,505,591.90 = 223,761,005.80/x
  3. Step 3: Cross multiply
    611,755,412.20x = 917,505,591.90 × 223,761,005.80
  4. Step 4: Simplify right side
    611,755,412.20x = 205,301,974,070,668,352
  5. Step 5: Solve for x
    x = 205,301,974,070,668,352/611,755,412.20
  6. Step 6: Final answer
    x = 335,594,863.53

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.