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Finding the Fourth Proportional to 80,878.76, 111,613.12 and 46,907.38

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Solution

The fourth proportional to 80,878.76, 111,613.12 and 46,907.38 is: 64,732.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,878.76 : 111,613.12 = 46,907.38 : x
  2. Step 2: Convert to fraction form
    80,878.76/111,613.12 = 46,907.38/x
  3. Step 3: Cross multiply
    80,878.76x = 111,613.12 × 46,907.38
  4. Step 4: Simplify right side
    80,878.76x = 5,235,478,474.76
  5. Step 5: Solve for x
    x = 5,235,478,474.76/80,878.76
  6. Step 6: Final answer
    x = 64,732.43

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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.