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Finding the Fourth Proportional to 393,371,839.20, 590,057,758.80 and 373,216,447.20

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Solution

The fourth proportional to 393,371,839.20, 590,057,758.80 and 373,216,447.20 is: 559,824,670.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    393,371,839.20 : 590,057,758.80 = 373,216,447.20 : x
  2. Step 2: Convert to fraction form
    393,371,839.20/590,057,758.80 = 373,216,447.20/x
  3. Step 3: Cross multiply
    393,371,839.20x = 590,057,758.80 × 373,216,447.20
  4. Step 4: Simplify right side
    393,371,839.20x = 220,219,260,382,130,496
  5. Step 5: Solve for x
    x = 220,219,260,382,130,496/393,371,839.20
  6. Step 6: Final answer
    x = 559,824,670.80

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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.