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Finding the Fourth Proportional to 896,116.48, 1,236,640 and 493,708.48

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Solution

The fourth proportional to 896,116.48, 1,236,640 and 493,708.48 is: 681,317.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    896,116.48 : 1,236,640 = 493,708.48 : x
  2. Step 2: Convert to fraction form
    896,116.48/1,236,640 = 493,708.48/x
  3. Step 3: Cross multiply
    896,116.48x = 1,236,640 × 493,708.48
  4. Step 4: Simplify right side
    896,116.48x = 610,539,654,707.20
  5. Step 5: Solve for x
    x = 610,539,654,707.20/896,116.48
  6. Step 6: Final answer
    x = 681,317.29

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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.