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Finding the Fourth Proportional to 2,984,870.40, 4,475,984.64 and 854,469.12

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Solution

The fourth proportional to 2,984,870.40, 4,475,984.64 and 854,469.12 is: 1,281,325.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,984,870.40 : 4,475,984.64 = 854,469.12 : x
  2. Step 2: Convert to fraction form
    2,984,870.40/4,475,984.64 = 854,469.12/x
  3. Step 3: Cross multiply
    2,984,870.40x = 4,475,984.64 × 854,469.12
  4. Step 4: Simplify right side
    2,984,870.40x = 3,824,590,656,474.32
  5. Step 5: Solve for x
    x = 3,824,590,656,474.32/2,984,870.40
  6. Step 6: Final answer
    x = 1,281,325.53

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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.