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Finding the Fourth Proportional to 27,978.75, 41,968.13 and 9,510.75

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Solution

The fourth proportional to 27,978.75, 41,968.13 and 9,510.75 is: 14,266.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,978.75 : 41,968.13 = 9,510.75 : x
  2. Step 2: Convert to fraction form
    27,978.75/41,968.13 = 9,510.75/x
  3. Step 3: Cross multiply
    27,978.75x = 41,968.13 × 9,510.75
  4. Step 4: Simplify right side
    27,978.75x = 399,148,344.84
  5. Step 5: Solve for x
    x = 399,148,344.84/27,978.75
  6. Step 6: Final answer
    x = 14,266.13

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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.