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Finding the Fourth Proportional to 14,618.84, 21,918.62 and 5,254.16

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Solution

The fourth proportional to 14,618.84, 21,918.62 and 5,254.16 is: 7,877.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,618.84 : 21,918.62 = 5,254.16 : x
  2. Step 2: Convert to fraction form
    14,618.84/21,918.62 = 5,254.16/x
  3. Step 3: Cross multiply
    14,618.84x = 21,918.62 × 5,254.16
  4. Step 4: Simplify right side
    14,618.84x = 115,163,936.46
  5. Step 5: Solve for x
    x = 115,163,936.46/14,618.84
  6. Step 6: Final answer
    x = 7,877.78

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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.