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Finding the Fourth Proportional to 653,497,661.20, 917,192,550.80 and 653,497,661.20

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Solution

The fourth proportional to 653,497,661.20, 917,192,550.80 and 653,497,661.20 is: 917,192,550.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    653,497,661.20 : 917,192,550.80 = 653,497,661.20 : x
  2. Step 2: Convert to fraction form
    653,497,661.20/917,192,550.80 = 653,497,661.20/x
  3. Step 3: Cross multiply
    653,497,661.20x = 917,192,550.80 × 653,497,661.20
  4. Step 4: Simplify right side
    653,497,661.20x = 599,383,186,817,862,144
  5. Step 5: Solve for x
    x = 599,383,186,817,862,144/653,497,661.20
  6. Step 6: Final answer
    x = 917,192,550.80

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Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.