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Finding the Fourth Proportional to 7,891,897.80, 11,837,846.70 and 3,640,369.80

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Solution

The fourth proportional to 7,891,897.80, 11,837,846.70 and 3,640,369.80 is: 5,460,554.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,891,897.80 : 11,837,846.70 = 3,640,369.80 : x
  2. Step 2: Convert to fraction form
    7,891,897.80/11,837,846.70 = 3,640,369.80/x
  3. Step 3: Cross multiply
    7,891,897.80x = 11,837,846.70 × 3,640,369.80
  4. Step 4: Simplify right side
    7,891,897.80x = 43,094,139,623,709.66
  5. Step 5: Solve for x
    x = 43,094,139,623,709.66/7,891,897.80
  6. Step 6: Final answer
    x = 5,460,554.70

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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.