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Finding the Fourth Proportional to 665,885.54, 998,837.54 and 216,608.77

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Solution

The fourth proportional to 665,885.54, 998,837.54 and 216,608.77 is: 324,916.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    665,885.54 : 998,837.54 = 216,608.77 : x
  2. Step 2: Convert to fraction form
    665,885.54/998,837.54 = 216,608.77/x
  3. Step 3: Cross multiply
    665,885.54x = 998,837.54 × 216,608.77
  4. Step 4: Simplify right side
    665,885.54x = 216,356,970,969.23
  5. Step 5: Solve for x
    x = 216,356,970,969.23/665,885.54
  6. Step 6: Final answer
    x = 324,916.16

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1.5x scale

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.