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Finding the Fourth Proportional to 1,137,607,728.60, 1,707,687,051.30 and 879,965,131.80

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Solution

The fourth proportional to 1,137,607,728.60, 1,707,687,051.30 and 879,965,131.80 is: 1,320,934,293.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,137,607,728.60 : 1,707,687,051.30 = 879,965,131.80 : x
  2. Step 2: Convert to fraction form
    1,137,607,728.60/1,707,687,051.30 = 879,965,131.80/x
  3. Step 3: Cross multiply
    1,137,607,728.60x = 1,707,687,051.30 × 879,965,131.80
  4. Step 4: Simplify right side
    1,137,607,728.60x = 1,502,705,061,170,357,760
  5. Step 5: Solve for x
    x = 1,502,705,061,170,357,760/1,137,607,728.60
  6. Step 6: Final answer
    x = 1,320,934,293.42

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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.