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Finding the Fourth Proportional to 443,921.36, 665,888.19 and 144,403.51

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Solution

The fourth proportional to 443,921.36, 665,888.19 and 144,403.51 is: 216,607.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    443,921.36 : 665,888.19 = 144,403.51 : x
  2. Step 2: Convert to fraction form
    443,921.36/665,888.19 = 144,403.51/x
  3. Step 3: Cross multiply
    443,921.36x = 665,888.19 × 144,403.51
  4. Step 4: Simplify right side
    443,921.36x = 96,156,591,758.12
  5. Step 5: Solve for x
    x = 96,156,591,758.12/443,921.36
  6. Step 6: Final answer
    x = 216,607.26

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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.