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Finding the Fourth Proportional to 1,329,033, 1,993,530.70 and 618,663.72

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Solution

The fourth proportional to 1,329,033, 1,993,530.70 and 618,663.72 is: 927,986.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,329,033 : 1,993,530.70 = 618,663.72 : x
  2. Step 2: Convert to fraction form
    1,329,033/1,993,530.70 = 618,663.72/x
  3. Step 3: Cross multiply
    1,329,033x = 1,993,530.70 × 618,663.72
  4. Step 4: Simplify right side
    1,329,033x = 1,233,325,118,796.20
  5. Step 5: Solve for x
    x = 1,233,325,118,796.20/1,329,033
  6. Step 6: Final answer
    x = 927,986.83

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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.