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Finding the Fourth Proportional to 1,009,651.03, 1,393,832.61 and 779,692.03

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Solution

The fourth proportional to 1,009,651.03, 1,393,832.61 and 779,692.03 is: 1,076,372.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,009,651.03 : 1,393,832.61 = 779,692.03 : x
  2. Step 2: Convert to fraction form
    1,009,651.03/1,393,832.61 = 779,692.03/x
  3. Step 3: Cross multiply
    1,009,651.03x = 1,393,832.61 × 779,692.03
  4. Step 4: Simplify right side
    1,009,651.03x = 1,086,760,173,686.52
  5. Step 5: Solve for x
    x = 1,086,760,173,686.52/1,009,651.03
  6. Step 6: Final answer
    x = 1,076,372.08

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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.