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Finding the Fourth Proportional to 28,889,771.80, 43,334,657.70 and 11,862,664.60

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Solution

The fourth proportional to 28,889,771.80, 43,334,657.70 and 11,862,664.60 is: 17,793,996.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,889,771.80 : 43,334,657.70 = 11,862,664.60 : x
  2. Step 2: Convert to fraction form
    28,889,771.80/43,334,657.70 = 11,862,664.60/x
  3. Step 3: Cross multiply
    28,889,771.80x = 43,334,657.70 × 11,862,664.60
  4. Step 4: Simplify right side
    28,889,771.80x = 514,064,509,850,907.44
  5. Step 5: Solve for x
    x = 514,064,509,850,907.44/28,889,771.80
  6. Step 6: Final answer
    x = 17,793,996.90

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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.