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Finding the Fourth Proportional to 170,513.84, 255,770.76 and 76,994.48

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Solution

The fourth proportional to 170,513.84, 255,770.76 and 76,994.48 is: 115,491.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    170,513.84 : 255,770.76 = 76,994.48 : x
  2. Step 2: Convert to fraction form
    170,513.84/255,770.76 = 76,994.48/x
  3. Step 3: Cross multiply
    170,513.84x = 255,770.76 × 76,994.48
  4. Step 4: Simplify right side
    170,513.84x = 19,692,936,665.40
  5. Step 5: Solve for x
    x = 19,692,936,665.40/170,513.84
  6. Step 6: Final answer
    x = 115,491.72

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1.5x scale

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.