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Finding the Fourth Proportional to 61,185.34, 91,845.07 and 48,615.90

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Solution

The fourth proportional to 61,185.34, 91,845.07 and 48,615.90 is: 72,977.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,185.34 : 91,845.07 = 48,615.90 : x
  2. Step 2: Convert to fraction form
    61,185.34/91,845.07 = 48,615.90/x
  3. Step 3: Cross multiply
    61,185.34x = 91,845.07 × 48,615.90
  4. Step 4: Simplify right side
    61,185.34x = 4,465,130,617.07
  5. Step 5: Solve for x
    x = 4,465,130,617.07/61,185.34
  6. Step 6: Final answer
    x = 72,977.13

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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.