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Finding the Fourth Proportional to 193,534.80, 290,302.20 and 51,379.80

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Solution

The fourth proportional to 193,534.80, 290,302.20 and 51,379.80 is: 77,069.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    193,534.80 : 290,302.20 = 51,379.80 : x
  2. Step 2: Convert to fraction form
    193,534.80/290,302.20 = 51,379.80/x
  3. Step 3: Cross multiply
    193,534.80x = 290,302.20 × 51,379.80
  4. Step 4: Simplify right side
    193,534.80x = 14,915,668,975.56
  5. Step 5: Solve for x
    x = 14,915,668,975.56/193,534.80
  6. Step 6: Final answer
    x = 77,069.70

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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.