Home / 38,589,907.80-53,254,165.74-21,187,374.78

Finding the Fourth Proportional to 38,589,907.80, 53,254,165.74 and 21,187,374.78

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Solution

The fourth proportional to 38,589,907.80, 53,254,165.74 and 21,187,374.78 is: 29,238,628.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,589,907.80 : 53,254,165.74 = 21,187,374.78 : x
  2. Step 2: Convert to fraction form
    38,589,907.80/53,254,165.74 = 21,187,374.78/x
  3. Step 3: Cross multiply
    38,589,907.80x = 53,254,165.74 × 21,187,374.78
  4. Step 4: Simplify right side
    38,589,907.80x = 1,128,315,968,129,616.25
  5. Step 5: Solve for x
    x = 1,128,315,968,129,616.25/38,589,907.80
  6. Step 6: Final answer
    x = 29,238,628.24

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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.