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Finding the Fourth Proportional to 554,009.66, 831,388.41 and 217,008.51

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Solution

The fourth proportional to 554,009.66, 831,388.41 and 217,008.51 is: 325,659.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    554,009.66 : 831,388.41 = 217,008.51 : x
  2. Step 2: Convert to fraction form
    554,009.66/831,388.41 = 217,008.51/x
  3. Step 3: Cross multiply
    554,009.66x = 831,388.41 × 217,008.51
  4. Step 4: Simplify right side
    554,009.66x = 180,418,361,212.23
  5. Step 5: Solve for x
    x = 180,418,361,212.23/554,009.66
  6. Step 6: Final answer
    x = 325,659.23

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.