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Finding the Fourth Proportional to 11,774,766.80, 17,670,023.40 and 5,381,728.40

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Solution

The fourth proportional to 11,774,766.80, 17,670,023.40 and 5,381,728.40 is: 8,076,191.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,774,766.80 : 17,670,023.40 = 5,381,728.40 : x
  2. Step 2: Convert to fraction form
    11,774,766.80/17,670,023.40 = 5,381,728.40/x
  3. Step 3: Cross multiply
    11,774,766.80x = 17,670,023.40 × 5,381,728.40
  4. Step 4: Simplify right side
    11,774,766.80x = 95,095,266,760,444.56
  5. Step 5: Solve for x
    x = 95,095,266,760,444.56/11,774,766.80
  6. Step 6: Final answer
    x = 8,076,191.09

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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.