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Finding the Fourth Proportional to 328,052,485.80, 492,078,728.70 and 328,052,485.80

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Solution

The fourth proportional to 328,052,485.80, 492,078,728.70 and 328,052,485.80 is: 492,078,728.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    328,052,485.80 : 492,078,728.70 = 328,052,485.80 : x
  2. Step 2: Convert to fraction form
    328,052,485.80/492,078,728.70 = 328,052,485.80/x
  3. Step 3: Cross multiply
    328,052,485.80x = 492,078,728.70 × 328,052,485.80
  4. Step 4: Simplify right side
    328,052,485.80x = 161,427,650,159,338,816
  5. Step 5: Solve for x
    x = 161,427,650,159,338,816/328,052,485.80
  6. Step 6: Final answer
    x = 492,078,728.70

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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.