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Finding the Fourth Proportional to 61,603.40, 92,405.10 and 55,382.60

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Solution

The fourth proportional to 61,603.40, 92,405.10 and 55,382.60 is: 83,073.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,603.40 : 92,405.10 = 55,382.60 : x
  2. Step 2: Convert to fraction form
    61,603.40/92,405.10 = 55,382.60/x
  3. Step 3: Cross multiply
    61,603.40x = 92,405.10 × 55,382.60
  4. Step 4: Simplify right side
    61,603.40x = 5,117,634,691.26
  5. Step 5: Solve for x
    x = 5,117,634,691.26/61,603.40
  6. Step 6: Final answer
    x = 83,073.90

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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.