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Finding the Fourth Proportional to 3,826,352.61, 5,739,859.40 and 986,440.77

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Solution

The fourth proportional to 3,826,352.61, 5,739,859.40 and 986,440.77 is: 1,479,746.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,826,352.61 : 5,739,859.40 = 986,440.77 : x
  2. Step 2: Convert to fraction form
    3,826,352.61/5,739,859.40 = 986,440.77/x
  3. Step 3: Cross multiply
    3,826,352.61x = 5,739,859.40 × 986,440.77
  4. Step 4: Simplify right side
    3,826,352.61x = 5,662,031,321,295.53
  5. Step 5: Solve for x
    x = 5,662,031,321,295.53/3,826,352.61
  6. Step 6: Final answer
    x = 1,479,746.35

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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.