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Finding the Fourth Proportional to 98,776.84, 136,310.89 and 53,453.78

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Solution

The fourth proportional to 98,776.84, 136,310.89 and 53,453.78 is: 73,765.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,776.84 : 136,310.89 = 53,453.78 : x
  2. Step 2: Convert to fraction form
    98,776.84/136,310.89 = 53,453.78/x
  3. Step 3: Cross multiply
    98,776.84x = 136,310.89 × 53,453.78
  4. Step 4: Simplify right side
    98,776.84x = 7,286,332,325.66
  5. Step 5: Solve for x
    x = 7,286,332,325.66/98,776.84
  6. Step 6: Final answer
    x = 73,765.59

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1.5x scale

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.