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Finding the Fourth Proportional to 61,056.88, 91,598.42 and 18,936.07

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Solution

The fourth proportional to 61,056.88, 91,598.42 and 18,936.07 is: 28,408.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,056.88 : 91,598.42 = 18,936.07 : x
  2. Step 2: Convert to fraction form
    61,056.88/91,598.42 = 18,936.07/x
  3. Step 3: Cross multiply
    61,056.88x = 91,598.42 × 18,936.07
  4. Step 4: Simplify right side
    61,056.88x = 1,734,513,911.35
  5. Step 5: Solve for x
    x = 1,734,513,911.35/61,056.88
  6. Step 6: Final answer
    x = 28,408.17

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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.