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Finding the Fourth Proportional to 235,676.85, 325,240.88 and 128,253.80

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Solution

The fourth proportional to 235,676.85, 325,240.88 and 128,253.80 is: 176,993.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    235,676.85 : 325,240.88 = 128,253.80 : x
  2. Step 2: Convert to fraction form
    235,676.85/325,240.88 = 128,253.80/x
  3. Step 3: Cross multiply
    235,676.85x = 325,240.88 × 128,253.80
  4. Step 4: Simplify right side
    235,676.85x = 41,713,378,775.34
  5. Step 5: Solve for x
    x = 41,713,378,775.34/235,676.85
  6. Step 6: Final answer
    x = 176,993.96

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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.