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Finding the Fourth Proportional to 1,261,903.86, 1,741,353.39 and 688,828.86

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Solution

The fourth proportional to 1,261,903.86, 1,741,353.39 and 688,828.86 is: 950,543.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,261,903.86 : 1,741,353.39 = 688,828.86 : x
  2. Step 2: Convert to fraction form
    1,261,903.86/1,741,353.39 = 688,828.86/x
  3. Step 3: Cross multiply
    1,261,903.86x = 1,741,353.39 × 688,828.86
  4. Step 4: Simplify right side
    1,261,903.86x = 1,199,494,470,490.84
  5. Step 5: Solve for x
    x = 1,199,494,470,490.84/1,261,903.86
  6. Step 6: Final answer
    x = 950,543.47

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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.