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Finding the Fourth Proportional to 128,555.78, 192,813.87 and 35,068.82

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Solution

The fourth proportional to 128,555.78, 192,813.87 and 35,068.82 is: 52,597.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,555.78 : 192,813.87 = 35,068.82 : x
  2. Step 2: Convert to fraction form
    128,555.78/192,813.87 = 35,068.82/x
  3. Step 3: Cross multiply
    128,555.78x = 192,813.87 × 35,068.82
  4. Step 4: Simplify right side
    128,555.78x = 6,761,754,900.53
  5. Step 5: Solve for x
    x = 6,761,754,900.53/128,555.78
  6. Step 6: Final answer
    x = 52,597.83

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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.