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Finding the Fourth Proportional to 136,907.70, 205,435.07 and 57,000.83

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Solution

The fourth proportional to 136,907.70, 205,435.07 and 57,000.83 is: 85,531.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,907.70 : 205,435.07 = 57,000.83 : x
  2. Step 2: Convert to fraction form
    136,907.70/205,435.07 = 57,000.83/x
  3. Step 3: Cross multiply
    136,907.70x = 205,435.07 × 57,000.83
  4. Step 4: Simplify right side
    136,907.70x = 11,709,969,501.11
  5. Step 5: Solve for x
    x = 11,709,969,501.11/136,907.70
  6. Step 6: Final answer
    x = 85,531.85

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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.