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Finding the Fourth Proportional to 76,636.84, 114,805.80 and 43,255.92

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Solution

The fourth proportional to 76,636.84, 114,805.80 and 43,255.92 is: 64,799.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,636.84 : 114,805.80 = 43,255.92 : x
  2. Step 2: Convert to fraction form
    76,636.84/114,805.80 = 43,255.92/x
  3. Step 3: Cross multiply
    76,636.84x = 114,805.80 × 43,255.92
  4. Step 4: Simplify right side
    76,636.84x = 4,966,030,500.34
  5. Step 5: Solve for x
    x = 4,966,030,500.34/76,636.84
  6. Step 6: Final answer
    x = 64,799.52

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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.