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Finding the Fourth Proportional to 1,803,970.81, 2,489,373.39 and 988,012

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Solution

The fourth proportional to 1,803,970.81, 2,489,373.39 and 988,012 is: 1,363,398.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,803,970.81 : 2,489,373.39 = 988,012 : x
  2. Step 2: Convert to fraction form
    1,803,970.81/2,489,373.39 = 988,012/x
  3. Step 3: Cross multiply
    1,803,970.81x = 2,489,373.39 × 988,012
  4. Step 4: Simplify right side
    1,803,970.81x = 2,459,530,781,800.68
  5. Step 5: Solve for x
    x = 2,459,530,781,800.68/1,803,970.81
  6. Step 6: Final answer
    x = 1,363,398.33

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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.