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Finding the Fourth Proportional to 5,271,855.74, 7,899,604.40 and 3,655,776.87

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Solution

The fourth proportional to 5,271,855.74, 7,899,604.40 and 3,655,776.87 is: 5,477,993.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,271,855.74 : 7,899,604.40 = 3,655,776.87 : x
  2. Step 2: Convert to fraction form
    5,271,855.74/7,899,604.40 = 3,655,776.87/x
  3. Step 3: Cross multiply
    5,271,855.74x = 7,899,604.40 × 3,655,776.87
  4. Step 4: Simplify right side
    5,271,855.74x = 28,879,191,047,670.23
  5. Step 5: Solve for x
    x = 28,879,191,047,670.23/5,271,855.74
  6. Step 6: Final answer
    x = 5,477,993.42

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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.