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Finding the Fourth Proportional to 61,063.15, 91,607.80 and 18,942.32

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Solution

The fourth proportional to 61,063.15, 91,607.80 and 18,942.32 is: 28,417.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,063.15 : 91,607.80 = 18,942.32 : x
  2. Step 2: Convert to fraction form
    61,063.15/91,607.80 = 18,942.32/x
  3. Step 3: Cross multiply
    61,063.15x = 91,607.80 × 18,942.32
  4. Step 4: Simplify right side
    61,063.15x = 1,735,264,262.10
  5. Step 5: Solve for x
    x = 1,735,264,262.10/61,063.15
  6. Step 6: Final answer
    x = 28,417.54

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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.