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Finding the Fourth Proportional to 917,368.80, 1,376,053.20 and 775,651.20

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Solution

The fourth proportional to 917,368.80, 1,376,053.20 and 775,651.20 is: 1,163,476.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    917,368.80 : 1,376,053.20 = 775,651.20 : x
  2. Step 2: Convert to fraction form
    917,368.80/1,376,053.20 = 775,651.20/x
  3. Step 3: Cross multiply
    917,368.80x = 1,376,053.20 × 775,651.20
  4. Step 4: Simplify right side
    917,368.80x = 1,067,337,315,843.84
  5. Step 5: Solve for x
    x = 1,067,337,315,843.84/917,368.80
  6. Step 6: Final answer
    x = 1,163,476.80

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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.