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Finding the Fourth Proportional to 1,256,975.40, 1,734,662.22 and 684,051.88

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Solution

The fourth proportional to 1,256,975.40, 1,734,662.22 and 684,051.88 is: 944,011.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,256,975.40 : 1,734,662.22 = 684,051.88 : x
  2. Step 2: Convert to fraction form
    1,256,975.40/1,734,662.22 = 684,051.88/x
  3. Step 3: Cross multiply
    1,256,975.40x = 1,734,662.22 × 684,051.88
  4. Step 4: Simplify right side
    1,256,975.40x = 1,186,598,952,755.97
  5. Step 5: Solve for x
    x = 1,186,598,952,755.97/1,256,975.40
  6. Step 6: Final answer
    x = 944,011.28

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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.