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Finding the Fourth Proportional to 190,605.13, 285,907.69 and 65,946.13

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Solution

The fourth proportional to 190,605.13, 285,907.69 and 65,946.13 is: 98,919.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    190,605.13 : 285,907.69 = 65,946.13 : x
  2. Step 2: Convert to fraction form
    190,605.13/285,907.69 = 65,946.13/x
  3. Step 3: Cross multiply
    190,605.13x = 285,907.69 × 65,946.13
  4. Step 4: Simplify right side
    190,605.13x = 18,854,505,692.74
  5. Step 5: Solve for x
    x = 18,854,505,692.74/190,605.13
  6. Step 6: Final answer
    x = 98,919.19

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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.