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Finding the Fourth Proportional to 86,015.16, 118,696.05 and 47,773.98

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Solution

The fourth proportional to 86,015.16, 118,696.05 and 47,773.98 is: 65,925.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,015.16 : 118,696.05 = 47,773.98 : x
  2. Step 2: Convert to fraction form
    86,015.16/118,696.05 = 47,773.98/x
  3. Step 3: Cross multiply
    86,015.16x = 118,696.05 × 47,773.98
  4. Step 4: Simplify right side
    86,015.16x = 5,670,582,718.78
  5. Step 5: Solve for x
    x = 5,670,582,718.78/86,015.16
  6. Step 6: Final answer
    x = 65,925.39

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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.