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Finding the Fourth Proportional to 160,724.21, 221,804.80 and 89,099.96

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Solution

The fourth proportional to 160,724.21, 221,804.80 and 89,099.96 is: 122,960.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    160,724.21 : 221,804.80 = 89,099.96 : x
  2. Step 2: Convert to fraction form
    160,724.21/221,804.80 = 89,099.96/x
  3. Step 3: Cross multiply
    160,724.21x = 221,804.80 × 89,099.96
  4. Step 4: Simplify right side
    160,724.21x = 19,762,797,476.03
  5. Step 5: Solve for x
    x = 19,762,797,476.03/160,724.21
  6. Step 6: Final answer
    x = 122,960.93

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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.