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Finding the Fourth Proportional to 61,603.21, 85,021.17 and 37,416.41

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Solution

The fourth proportional to 61,603.21, 85,021.17 and 37,416.41 is: 51,639.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,603.21 : 85,021.17 = 37,416.41 : x
  2. Step 2: Convert to fraction form
    61,603.21/85,021.17 = 37,416.41/x
  3. Step 3: Cross multiply
    61,603.21x = 85,021.17 × 37,416.41
  4. Step 4: Simplify right side
    61,603.21x = 3,181,186,955.40
  5. Step 5: Solve for x
    x = 3,181,186,955.40/61,603.21
  6. Step 6: Final answer
    x = 51,639.95

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.