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Finding the Fourth Proportional to 15,672,234.64, 21,626,497.92 and 8,795,388.10

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Solution

The fourth proportional to 15,672,234.64, 21,626,497.92 and 8,795,388.10 is: 12,136,970.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,672,234.64 : 21,626,497.92 = 8,795,388.10 : x
  2. Step 2: Convert to fraction form
    15,672,234.64/21,626,497.92 = 8,795,388.10/x
  3. Step 3: Cross multiply
    15,672,234.64x = 21,626,497.92 × 8,795,388.10
  4. Step 4: Simplify right side
    15,672,234.64x = 190,213,442,450,242.75
  5. Step 5: Solve for x
    x = 190,213,442,450,242.75/15,672,234.64
  6. Step 6: Final answer
    x = 12,136,970.05

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.