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Finding the Fourth Proportional to 21,978,045.90, 32,967,068.85 and 14,409,405.90

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Solution

The fourth proportional to 21,978,045.90, 32,967,068.85 and 14,409,405.90 is: 21,614,108.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,978,045.90 : 32,967,068.85 = 14,409,405.90 : x
  2. Step 2: Convert to fraction form
    21,978,045.90/32,967,068.85 = 14,409,405.90/x
  3. Step 3: Cross multiply
    21,978,045.90x = 32,967,068.85 × 14,409,405.90
  4. Step 4: Simplify right side
    21,978,045.90x = 475,035,876,392,896.25
  5. Step 5: Solve for x
    x = 475,035,876,392,896.25/21,978,045.90
  6. Step 6: Final answer
    x = 21,614,108.85

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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.