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Finding the Fourth Proportional to 1,372,185, 1,893,615.30 and 835,641

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Solution

The fourth proportional to 1,372,185, 1,893,615.30 and 835,641 is: 1,153,184.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,372,185 : 1,893,615.30 = 835,641 : x
  2. Step 2: Convert to fraction form
    1,372,185/1,893,615.30 = 835,641/x
  3. Step 3: Cross multiply
    1,372,185x = 1,893,615.30 × 835,641
  4. Step 4: Simplify right side
    1,372,185x = 1,582,382,582,907.30
  5. Step 5: Solve for x
    x = 1,582,382,582,907.30/1,372,185
  6. Step 6: Final answer
    x = 1,153,184.58

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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.