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Finding the Fourth Proportional to 1,672,993,679.04, 2,308,718,536.20 and 920,290,687.92

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Solution

The fourth proportional to 1,672,993,679.04, 2,308,718,536.20 and 920,290,687.92 is: 1,269,994,140.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,672,993,679.04 : 2,308,718,536.20 = 920,290,687.92 : x
  2. Step 2: Convert to fraction form
    1,672,993,679.04/2,308,718,536.20 = 920,290,687.92/x
  3. Step 3: Cross multiply
    1,672,993,679.04x = 2,308,718,536.20 × 920,290,687.92
  4. Step 4: Simplify right side
    1,672,993,679.04x = 2,124,692,169,893,153,024
  5. Step 5: Solve for x
    x = 2,124,692,169,893,153,024/1,672,993,679.04
  6. Step 6: Final answer
    x = 1,269,994,140.75

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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.