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Finding the Fourth Proportional to 14,172.84, 21,259.47 and 4,938.84

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Solution

The fourth proportional to 14,172.84, 21,259.47 and 4,938.84 is: 7,408.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,172.84 : 21,259.47 = 4,938.84 : x
  2. Step 2: Convert to fraction form
    14,172.84/21,259.47 = 4,938.84/x
  3. Step 3: Cross multiply
    14,172.84x = 21,259.47 × 4,938.84
  4. Step 4: Simplify right side
    14,172.84x = 104,997,200.54
  5. Step 5: Solve for x
    x = 104,997,200.54/14,172.84
  6. Step 6: Final answer
    x = 7,408.34

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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.