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Finding the Fourth Proportional to 112,364.60, 155,063.16 and 62,063.60

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Solution

The fourth proportional to 112,364.60, 155,063.16 and 62,063.60 is: 85,647.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,364.60 : 155,063.16 = 62,063.60 : x
  2. Step 2: Convert to fraction form
    112,364.60/155,063.16 = 62,063.60/x
  3. Step 3: Cross multiply
    112,364.60x = 155,063.16 × 62,063.60
  4. Step 4: Simplify right side
    112,364.60x = 9,623,777,936.98
  5. Step 5: Solve for x
    x = 9,623,777,936.98/112,364.60
  6. Step 6: Final answer
    x = 85,647.77

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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.