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Finding the Fourth Proportional to 160,468.71, 221,450.28 and 87,874.67

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Solution

The fourth proportional to 160,468.71, 221,450.28 and 87,874.67 is: 121,268.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    160,468.71 : 221,450.28 = 87,874.67 : x
  2. Step 2: Convert to fraction form
    160,468.71/221,450.28 = 87,874.67/x
  3. Step 3: Cross multiply
    160,468.71x = 221,450.28 × 87,874.67
  4. Step 4: Simplify right side
    160,468.71x = 19,459,869,169.16
  5. Step 5: Solve for x
    x = 19,459,869,169.16/160,468.71
  6. Step 6: Final answer
    x = 121,268.93

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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.