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Finding the Fourth Proportional to 3,291,985.80, 4,937,978.70 and 1,874,809.80

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Solution

The fourth proportional to 3,291,985.80, 4,937,978.70 and 1,874,809.80 is: 2,812,214.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,291,985.80 : 4,937,978.70 = 1,874,809.80 : x
  2. Step 2: Convert to fraction form
    3,291,985.80/4,937,978.70 = 1,874,809.80/x
  3. Step 3: Cross multiply
    3,291,985.80x = 4,937,978.70 × 1,874,809.80
  4. Step 4: Simplify right side
    3,291,985.80x = 9,257,770,858,951.26
  5. Step 5: Solve for x
    x = 9,257,770,858,951.26/3,291,985.80
  6. Step 6: Final answer
    x = 2,812,214.70

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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.