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Finding the Fourth Proportional to 78,608.70, 117,927.41 and 36,482.98

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Solution

The fourth proportional to 78,608.70, 117,927.41 and 36,482.98 is: 54,731.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,608.70 : 117,927.41 = 36,482.98 : x
  2. Step 2: Convert to fraction form
    78,608.70/117,927.41 = 36,482.98/x
  3. Step 3: Cross multiply
    78,608.70x = 117,927.41 × 36,482.98
  4. Step 4: Simplify right side
    78,608.70x = 4,302,343,340.48
  5. Step 5: Solve for x
    x = 4,302,343,340.48/78,608.70
  6. Step 6: Final answer
    x = 54,731.13

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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.