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Finding the Fourth Proportional to 60,428.30, 90,644.22 and 28,841.67

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Solution

The fourth proportional to 60,428.30, 90,644.22 and 28,841.67 is: 43,263.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,428.30 : 90,644.22 = 28,841.67 : x
  2. Step 2: Convert to fraction form
    60,428.30/90,644.22 = 28,841.67/x
  3. Step 3: Cross multiply
    60,428.30x = 90,644.22 × 28,841.67
  4. Step 4: Simplify right side
    60,428.30x = 2,614,330,680.65
  5. Step 5: Solve for x
    x = 2,614,330,680.65/60,428.30
  6. Step 6: Final answer
    x = 43,263.35

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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.