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Finding the Fourth Proportional to 38,556,662.96, 57,798,237.96 and 12,984,513.20

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Solution

The fourth proportional to 38,556,662.96, 57,798,237.96 and 12,984,513.20 is: 19,464,391.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,556,662.96 : 57,798,237.96 = 12,984,513.20 : x
  2. Step 2: Convert to fraction form
    38,556,662.96/57,798,237.96 = 12,984,513.20/x
  3. Step 3: Cross multiply
    38,556,662.96x = 57,798,237.96 × 12,984,513.20
  4. Step 4: Simplify right side
    38,556,662.96x = 750,481,983,728,361
  5. Step 5: Solve for x
    x = 750,481,983,728,361/38,556,662.96
  6. Step 6: Final answer
    x = 19,464,391.52

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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.