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Finding the Fourth Proportional to 1,777,123.10, 2,664,907.05 and 711,811.10

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Solution

The fourth proportional to 1,777,123.10, 2,664,907.05 and 711,811.10 is: 1,067,405.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,777,123.10 : 2,664,907.05 = 711,811.10 : x
  2. Step 2: Convert to fraction form
    1,777,123.10/2,664,907.05 = 711,811.10/x
  3. Step 3: Cross multiply
    1,777,123.10x = 2,664,907.05 × 711,811.10
  4. Step 4: Simplify right side
    1,777,123.10x = 1,896,910,418,658.26
  5. Step 5: Solve for x
    x = 1,896,910,418,658.26/1,777,123.10
  6. Step 6: Final answer
    x = 1,067,405.19

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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.