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Finding the Fourth Proportional to 85,515.95, 118,054.10 and 53,702.39

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Solution

The fourth proportional to 85,515.95, 118,054.10 and 53,702.39 is: 74,135.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,515.95 : 118,054.10 = 53,702.39 : x
  2. Step 2: Convert to fraction form
    85,515.95/118,054.10 = 53,702.39/x
  3. Step 3: Cross multiply
    85,515.95x = 118,054.10 × 53,702.39
  4. Step 4: Simplify right side
    85,515.95x = 6,339,787,345.92
  5. Step 5: Solve for x
    x = 6,339,787,345.92/85,515.95
  6. Step 6: Final answer
    x = 74,135.73

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