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Finding the Fourth Proportional to 111,684.67, 154,160.76 and 71,506.65

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Solution

The fourth proportional to 111,684.67, 154,160.76 and 71,506.65 is: 98,702.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,684.67 : 154,160.76 = 71,506.65 : x
  2. Step 2: Convert to fraction form
    111,684.67/154,160.76 = 71,506.65/x
  3. Step 3: Cross multiply
    111,684.67x = 154,160.76 × 71,506.65
  4. Step 4: Simplify right side
    111,684.67x = 11,023,519,509.05
  5. Step 5: Solve for x
    x = 11,023,519,509.05/111,684.67
  6. Step 6: Final answer
    x = 98,702.17

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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.