Home / 9,986,857.12-13,781,858.16-5,636,855.80

Finding the Fourth Proportional to 9,986,857.12, 13,781,858.16 and 5,636,855.80

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Solution

The fourth proportional to 9,986,857.12, 13,781,858.16 and 5,636,855.80 is: 7,778,858.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,986,857.12 : 13,781,858.16 = 5,636,855.80 : x
  2. Step 2: Convert to fraction form
    9,986,857.12/13,781,858.16 = 5,636,855.80/x
  3. Step 3: Cross multiply
    9,986,857.12x = 13,781,858.16 × 5,636,855.80
  4. Step 4: Simplify right side
    9,986,857.12x = 77,686,347,103,973.33
  5. Step 5: Solve for x
    x = 77,686,347,103,973.33/9,986,857.12
  6. Step 6: Final answer
    x = 7,778,858.37

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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.