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Finding the Fourth Proportional to 7,035,791.07, 9,709,556.07 and 3,938,237.40

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Solution

The fourth proportional to 7,035,791.07, 9,709,556.07 and 3,938,237.40 is: 5,434,859.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,035,791.07 : 9,709,556.07 = 3,938,237.40 : x
  2. Step 2: Convert to fraction form
    7,035,791.07/9,709,556.07 = 3,938,237.40/x
  3. Step 3: Cross multiply
    7,035,791.07x = 9,709,556.07 × 3,938,237.40
  4. Step 4: Simplify right side
    7,035,791.07x = 38,238,536,852,271.02
  5. Step 5: Solve for x
    x = 38,238,536,852,271.02/7,035,791.07
  6. Step 6: Final answer
    x = 5,434,859.63

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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.