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Finding the Fourth Proportional to 9,907,848.60, 14,861,772.90 and 8,648,136.60

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Solution

The fourth proportional to 9,907,848.60, 14,861,772.90 and 8,648,136.60 is: 12,972,204.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,907,848.60 : 14,861,772.90 = 8,648,136.60 : x
  2. Step 2: Convert to fraction form
    9,907,848.60/14,861,772.90 = 8,648,136.60/x
  3. Step 3: Cross multiply
    9,907,848.60x = 14,861,772.90 × 8,648,136.60
  4. Step 4: Simplify right side
    9,907,848.60x = 128,526,642,157,378.14
  5. Step 5: Solve for x
    x = 128,526,642,157,378.14/9,907,848.60
  6. Step 6: Final answer
    x = 12,972,204.90

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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.