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Finding the Fourth Proportional to 3,000,134.80, 4,493,203.80 and 2,940,000.40

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Solution

The fourth proportional to 3,000,134.80, 4,493,203.80 and 2,940,000.40 is: 4,403,142.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,000,134.80 : 4,493,203.80 = 2,940,000.40 : x
  2. Step 2: Convert to fraction form
    3,000,134.80/4,493,203.80 = 2,940,000.40/x
  3. Step 3: Cross multiply
    3,000,134.80x = 4,493,203.80 × 2,940,000.40
  4. Step 4: Simplify right side
    3,000,134.80x = 13,210,020,969,281.52
  5. Step 5: Solve for x
    x = 13,210,020,969,281.52/3,000,134.80
  6. Step 6: Final answer
    x = 4,403,142.48

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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.