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Finding the Fourth Proportional to 666,111.22, 998,941.11 and 216,721.06

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Solution

The fourth proportional to 666,111.22, 998,941.11 and 216,721.06 is: 325,008.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    666,111.22 : 998,941.11 = 216,721.06 : x
  2. Step 2: Convert to fraction form
    666,111.22/998,941.11 = 216,721.06/x
  3. Step 3: Cross multiply
    666,111.22x = 998,941.11 × 216,721.06
  4. Step 4: Simplify right side
    666,111.22x = 216,491,576,236.78
  5. Step 5: Solve for x
    x = 216,491,576,236.78/666,111.22
  6. Step 6: Final answer
    x = 325,008.15

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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.