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Finding the Fourth Proportional to 18,308.48, 25,265.40 and 10,350.40

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Solution

The fourth proportional to 18,308.48, 25,265.40 and 10,350.40 is: 14,283.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,308.48 : 25,265.40 = 10,350.40 : x
  2. Step 2: Convert to fraction form
    18,308.48/25,265.40 = 10,350.40/x
  3. Step 3: Cross multiply
    18,308.48x = 25,265.40 × 10,350.40
  4. Step 4: Simplify right side
    18,308.48x = 261,506,996.16
  5. Step 5: Solve for x
    x = 261,506,996.16/18,308.48
  6. Step 6: Final answer
    x = 14,283.38

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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.