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Finding the Fourth Proportional to 4,969,804.80, 7,458,643.80 and 1,938,622.80

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Solution

The fourth proportional to 4,969,804.80, 7,458,643.80 and 1,938,622.80 is: 2,909,469.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,969,804.80 : 7,458,643.80 = 1,938,622.80 : x
  2. Step 2: Convert to fraction form
    4,969,804.80/7,458,643.80 = 1,938,622.80/x
  3. Step 3: Cross multiply
    4,969,804.80x = 7,458,643.80 × 1,938,622.80
  4. Step 4: Simplify right side
    4,969,804.80x = 14,459,496,927,758.64
  5. Step 5: Solve for x
    x = 14,459,496,927,758.64/4,969,804.80
  6. Step 6: Final answer
    x = 2,909,469.79

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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.