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Finding the Fourth Proportional to 463,766,969.53, 639,994,645.42 and 254,920,891.69

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Solution

The fourth proportional to 463,766,969.53, 639,994,645.42 and 254,920,891.69 is: 351,788,756.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    463,766,969.53 : 639,994,645.42 = 254,920,891.69 : x
  2. Step 2: Convert to fraction form
    463,766,969.53/639,994,645.42 = 254,920,891.69/x
  3. Step 3: Cross multiply
    463,766,969.53x = 639,994,645.42 × 254,920,891.69
  4. Step 4: Simplify right side
    463,766,969.53x = 163,148,005,687,291,776
  5. Step 5: Solve for x
    x = 163,148,005,687,291,776/463,766,969.53
  6. Step 6: Final answer
    x = 351,788,756.87

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.