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Finding the Fourth Proportional to 21,985,497.90, 32,978,246.85 and 16,316,793.90

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Solution

The fourth proportional to 21,985,497.90, 32,978,246.85 and 16,316,793.90 is: 24,475,190.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,985,497.90 : 32,978,246.85 = 16,316,793.90 : x
  2. Step 2: Convert to fraction form
    21,985,497.90/32,978,246.85 = 16,316,793.90/x
  3. Step 3: Cross multiply
    21,985,497.90x = 32,978,246.85 × 16,316,793.90
  4. Step 4: Simplify right side
    21,985,497.90x = 538,099,257,034,774.25
  5. Step 5: Solve for x
    x = 538,099,257,034,774.25/21,985,497.90
  6. Step 6: Final answer
    x = 24,475,190.85

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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.