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Finding the Fourth Proportional to 10,936,809.60, 16,405,214.40 and 10,405,368.60

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Solution

The fourth proportional to 10,936,809.60, 16,405,214.40 and 10,405,368.60 is: 15,608,052.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,936,809.60 : 16,405,214.40 = 10,405,368.60 : x
  2. Step 2: Convert to fraction form
    10,936,809.60/16,405,214.40 = 10,405,368.60/x
  3. Step 3: Cross multiply
    10,936,809.60x = 16,405,214.40 × 10,405,368.60
  4. Step 4: Simplify right side
    10,936,809.60x = 170,702,302,794,027.84
  5. Step 5: Solve for x
    x = 170,702,302,794,027.84/10,936,809.60
  6. Step 6: Final answer
    x = 15,608,052.90

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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.