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Finding the Fourth Proportional to 481,808.10, 722,712.15 and 216,087.60

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Solution

The fourth proportional to 481,808.10, 722,712.15 and 216,087.60 is: 324,131.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    481,808.10 : 722,712.15 = 216,087.60 : x
  2. Step 2: Convert to fraction form
    481,808.10/722,712.15 = 216,087.60/x
  3. Step 3: Cross multiply
    481,808.10x = 722,712.15 × 216,087.60
  4. Step 4: Simplify right side
    481,808.10x = 156,169,133,984.34
  5. Step 5: Solve for x
    x = 156,169,133,984.34/481,808.10
  6. Step 6: Final answer
    x = 324,131.40

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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.