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Finding the Fourth Proportional to 1,257,631.86, 1,735,531.47 and 684,671.88

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Solution

The fourth proportional to 1,257,631.86, 1,735,531.47 and 684,671.88 is: 944,846.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,257,631.86 : 1,735,531.47 = 684,671.88 : x
  2. Step 2: Convert to fraction form
    1,257,631.86/1,735,531.47 = 684,671.88/x
  3. Step 3: Cross multiply
    1,257,631.86x = 1,735,531.47 × 684,671.88
  4. Step 4: Simplify right side
    1,257,631.86x = 1,188,269,594,364.06
  5. Step 5: Solve for x
    x = 1,188,269,594,364.06/1,257,631.86
  6. Step 6: Final answer
    x = 944,846.92

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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.