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Finding the Fourth Proportional to 325,534.80, 449,393.78 and 216,820.06

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Solution

The fourth proportional to 325,534.80, 449,393.78 and 216,820.06 is: 299,315.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    325,534.80 : 449,393.78 = 216,820.06 : x
  2. Step 2: Convert to fraction form
    325,534.80/449,393.78 = 216,820.06/x
  3. Step 3: Cross multiply
    325,534.80x = 449,393.78 × 216,820.06
  4. Step 4: Simplify right side
    325,534.80x = 97,437,583,012.16
  5. Step 5: Solve for x
    x = 97,437,583,012.16/325,534.80
  6. Step 6: Final answer
    x = 299,315.42

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1.5x scale

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.