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Finding the Fourth Proportional to 1,296,997, 1,776,877.57 and 1,248,495.88

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Solution

The fourth proportional to 1,296,997, 1,776,877.57 and 1,248,495.88 is: 1,710,431.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,296,997 : 1,776,877.57 = 1,248,495.88 : x
  2. Step 2: Convert to fraction form
    1,296,997/1,776,877.57 = 1,248,495.88/x
  3. Step 3: Cross multiply
    1,296,997x = 1,776,877.57 × 1,248,495.88
  4. Step 4: Simplify right side
    1,296,997x = 2,218,424,325,409.41
  5. Step 5: Solve for x
    x = 2,218,424,325,409.41/1,296,997
  6. Step 6: Final answer
    x = 1,710,431.35

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.