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Finding the Fourth Proportional to 1,985,541.20, 2,978,311.80 and 565,578.80

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Solution

The fourth proportional to 1,985,541.20, 2,978,311.80 and 565,578.80 is: 848,368.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,985,541.20 : 2,978,311.80 = 565,578.80 : x
  2. Step 2: Convert to fraction form
    1,985,541.20/2,978,311.80 = 565,578.80/x
  3. Step 3: Cross multiply
    1,985,541.20x = 2,978,311.80 × 565,578.80
  4. Step 4: Simplify right side
    1,985,541.20x = 1,684,470,013,869.84
  5. Step 5: Solve for x
    x = 1,684,470,013,869.84/1,985,541.20
  6. Step 6: Final answer
    x = 848,368.20

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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.