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Finding the Fourth Proportional to 18,762.03, 25,891.25 and 10,378.53

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Solution

The fourth proportional to 18,762.03, 25,891.25 and 10,378.53 is: 14,322.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,762.03 : 25,891.25 = 10,378.53 : x
  2. Step 2: Convert to fraction form
    18,762.03/25,891.25 = 10,378.53/x
  3. Step 3: Cross multiply
    18,762.03x = 25,891.25 × 10,378.53
  4. Step 4: Simplify right side
    18,762.03x = 268,713,062.97
  5. Step 5: Solve for x
    x = 268,713,062.97/18,762.03
  6. Step 6: Final answer
    x = 14,322.17

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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.