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Finding the Fourth Proportional to 111,813.96, 167,798.70 and 72,273

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Solution

The fourth proportional to 111,813.96, 167,798.70 and 72,273 is: 108,459.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,813.96 : 167,798.70 = 72,273 : x
  2. Step 2: Convert to fraction form
    111,813.96/167,798.70 = 72,273/x
  3. Step 3: Cross multiply
    111,813.96x = 167,798.70 × 72,273
  4. Step 4: Simplify right side
    111,813.96x = 12,127,315,445.10
  5. Step 5: Solve for x
    x = 12,127,315,445.10/111,813.96
  6. Step 6: Final answer
    x = 108,459.76

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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.