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Finding the Fourth Proportional to 71,928.84, 99,307.92 and 46,446.60

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Solution

The fourth proportional to 71,928.84, 99,307.92 and 46,446.60 is: 64,126.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,928.84 : 99,307.92 = 46,446.60 : x
  2. Step 2: Convert to fraction form
    71,928.84/99,307.92 = 46,446.60/x
  3. Step 3: Cross multiply
    71,928.84x = 99,307.92 × 46,446.60
  4. Step 4: Simplify right side
    71,928.84x = 4,612,515,237.07
  5. Step 5: Solve for x
    x = 4,612,515,237.07/71,928.84
  6. Step 6: Final answer
    x = 64,126.09

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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.