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Finding the Fourth Proportional to 18,448.71, 25,459.10 and 10,490.94

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Solution

The fourth proportional to 18,448.71, 25,459.10 and 10,490.94 is: 14,477.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,448.71 : 25,459.10 = 10,490.94 : x
  2. Step 2: Convert to fraction form
    18,448.71/25,459.10 = 10,490.94/x
  3. Step 3: Cross multiply
    18,448.71x = 25,459.10 × 10,490.94
  4. Step 4: Simplify right side
    18,448.71x = 267,089,890.55
  5. Step 5: Solve for x
    x = 267,089,890.55/18,448.71
  6. Step 6: Final answer
    x = 14,477.43

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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.