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Finding the Fourth Proportional to 14,616.18, 21,918.86 and 5,253.68

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Solution

The fourth proportional to 14,616.18, 21,918.86 and 5,253.68 is: 7,878.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,616.18 : 21,918.86 = 5,253.68 : x
  2. Step 2: Convert to fraction form
    14,616.18/21,918.86 = 5,253.68/x
  3. Step 3: Cross multiply
    14,616.18x = 21,918.86 × 5,253.68
  4. Step 4: Simplify right side
    14,616.18x = 115,154,676.40
  5. Step 5: Solve for x
    x = 115,154,676.40/14,616.18
  6. Step 6: Final answer
    x = 7,878.58

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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.