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Finding the Fourth Proportional to 528,819,939.20, 793,229,908.80 and 528,819,939.20

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Solution

The fourth proportional to 528,819,939.20, 793,229,908.80 and 528,819,939.20 is: 793,229,908.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    528,819,939.20 : 793,229,908.80 = 528,819,939.20 : x
  2. Step 2: Convert to fraction form
    528,819,939.20/793,229,908.80 = 528,819,939.20/x
  3. Step 3: Cross multiply
    528,819,939.20x = 793,229,908.80 × 528,819,939.20
  4. Step 4: Simplify right side
    528,819,939.20x = 419,475,792,143,237,504
  5. Step 5: Solve for x
    x = 419,475,792,143,237,504/528,819,939.20
  6. Step 6: Final answer
    x = 793,229,908.80

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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.