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Finding the Fourth Proportional to 38,855,907.40, 54,477,896.60 and 38,855,907.40

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Solution

The fourth proportional to 38,855,907.40, 54,477,896.60 and 38,855,907.40 is: 54,477,896.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,855,907.40 : 54,477,896.60 = 38,855,907.40 : x
  2. Step 2: Convert to fraction form
    38,855,907.40/54,477,896.60 = 38,855,907.40/x
  3. Step 3: Cross multiply
    38,855,907.40x = 54,477,896.60 × 38,855,907.40
  4. Step 4: Simplify right side
    38,855,907.40x = 2,116,788,105,636,374.75
  5. Step 5: Solve for x
    x = 2,116,788,105,636,374.75/38,855,907.40
  6. Step 6: Final answer
    x = 54,477,896.60

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Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.