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Finding the Fourth Proportional to 620,494,878.20, 856,282,530.06 and 338,237,858.84

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Solution

The fourth proportional to 620,494,878.20, 856,282,530.06 and 338,237,858.84 is: 466,768,026.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    620,494,878.20 : 856,282,530.06 = 338,237,858.84 : x
  2. Step 2: Convert to fraction form
    620,494,878.20/856,282,530.06 = 338,237,858.84/x
  3. Step 3: Cross multiply
    620,494,878.20x = 856,282,530.06 × 338,237,858.84
  4. Step 4: Simplify right side
    620,494,878.20x = 289,627,169,525,310,912
  5. Step 5: Solve for x
    x = 289,627,169,525,310,912/620,494,878.20
  6. Step 6: Final answer
    x = 466,768,026.14

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