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Finding the Fourth Proportional to 4,895,978.20, 7,343,967.30 and 3,636,266.20

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Solution

The fourth proportional to 4,895,978.20, 7,343,967.30 and 3,636,266.20 is: 5,454,399.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,895,978.20 : 7,343,967.30 = 3,636,266.20 : x
  2. Step 2: Convert to fraction form
    4,895,978.20/7,343,967.30 = 3,636,266.20/x
  3. Step 3: Cross multiply
    4,895,978.20x = 7,343,967.30 × 3,636,266.20
  4. Step 4: Simplify right side
    4,895,978.20x = 26,704,620,066,895.26
  5. Step 5: Solve for x
    x = 26,704,620,066,895.26/4,895,978.20
  6. Step 6: Final answer
    x = 5,454,399.30

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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.