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Finding the Fourth Proportional to 11,329,907.70, 16,994,861.55 and 9,788,728.80

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Solution

The fourth proportional to 11,329,907.70, 16,994,861.55 and 9,788,728.80 is: 14,683,093.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,329,907.70 : 16,994,861.55 = 9,788,728.80 : x
  2. Step 2: Convert to fraction form
    11,329,907.70/16,994,861.55 = 9,788,728.80/x
  3. Step 3: Cross multiply
    11,329,907.70x = 16,994,861.55 × 9,788,728.80
  4. Step 4: Simplify right side
    11,329,907.70x = 166,358,090,706,497.66
  5. Step 5: Solve for x
    x = 166,358,090,706,497.66/11,329,907.70
  6. Step 6: Final answer
    x = 14,683,093.20

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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.