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Finding the Fourth Proportional to 16,656,636.70, 24,984,955.05 and 8,142,435.10

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Solution

The fourth proportional to 16,656,636.70, 24,984,955.05 and 8,142,435.10 is: 12,213,652.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,656,636.70 : 24,984,955.05 = 8,142,435.10 : x
  2. Step 2: Convert to fraction form
    16,656,636.70/24,984,955.05 = 8,142,435.10/x
  3. Step 3: Cross multiply
    16,656,636.70x = 24,984,955.05 × 8,142,435.10
  4. Step 4: Simplify right side
    16,656,636.70x = 203,438,374,971,042.25
  5. Step 5: Solve for x
    x = 203,438,374,971,042.25/16,656,636.70
  6. Step 6: Final answer
    x = 12,213,652.65

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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.