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Finding the Fourth Proportional to 1,256,636.94, 1,734,188.94 and 712,809.42

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Solution

The fourth proportional to 1,256,636.94, 1,734,188.94 and 712,809.42 is: 983,694.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,256,636.94 : 1,734,188.94 = 712,809.42 : x
  2. Step 2: Convert to fraction form
    1,256,636.94/1,734,188.94 = 712,809.42/x
  3. Step 3: Cross multiply
    1,256,636.94x = 1,734,188.94 × 712,809.42
  4. Step 4: Simplify right side
    1,256,636.94x = 1,236,146,212,491.82
  5. Step 5: Solve for x
    x = 1,236,146,212,491.82/1,256,636.94
  6. Step 6: Final answer
    x = 983,694.00

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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.