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Finding the Fourth Proportional to 3,315,871.42, 4,972,442.73 and 1,267,288.62

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Solution

The fourth proportional to 3,315,871.42, 4,972,442.73 and 1,267,288.62 is: 1,900,411.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,315,871.42 : 4,972,442.73 = 1,267,288.62 : x
  2. Step 2: Convert to fraction form
    3,315,871.42/4,972,442.73 = 1,267,288.62/x
  3. Step 3: Cross multiply
    3,315,871.42x = 4,972,442.73 × 1,267,288.62
  4. Step 4: Simplify right side
    3,315,871.42x = 6,301,520,097,030.23
  5. Step 5: Solve for x
    x = 6,301,520,097,030.23/3,315,871.42
  6. Step 6: Final answer
    x = 1,900,411.48

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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.