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Finding the Fourth Proportional to 108,531.65, 163,047.75 and 104,047.67

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Solution

The fourth proportional to 108,531.65, 163,047.75 and 104,047.67 is: 156,311.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,531.65 : 163,047.75 = 104,047.67 : x
  2. Step 2: Convert to fraction form
    108,531.65/163,047.75 = 104,047.67/x
  3. Step 3: Cross multiply
    108,531.65x = 163,047.75 × 104,047.67
  4. Step 4: Simplify right side
    108,531.65x = 16,964,738,486.24
  5. Step 5: Solve for x
    x = 16,964,738,486.24/108,531.65
  6. Step 6: Final answer
    x = 156,311.44

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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.