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Finding the Fourth Proportional to 46,668.95, 69,990.53 and 12,926.90

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Solution

The fourth proportional to 46,668.95, 69,990.53 and 12,926.90 is: 19,386.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    46,668.95 : 69,990.53 = 12,926.90 : x
  2. Step 2: Convert to fraction form
    46,668.95/69,990.53 = 12,926.90/x
  3. Step 3: Cross multiply
    46,668.95x = 69,990.53 × 12,926.90
  4. Step 4: Simplify right side
    46,668.95x = 904,760,517.62
  5. Step 5: Solve for x
    x = 904,760,517.62/46,668.95
  6. Step 6: Final answer
    x = 19,386.78

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1.5x scale

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.