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Finding the Fourth Proportional to 411,528.84, 617,352.42 and 127,241.55

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Solution

The fourth proportional to 411,528.84, 617,352.42 and 127,241.55 is: 190,880.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    411,528.84 : 617,352.42 = 127,241.55 : x
  2. Step 2: Convert to fraction form
    411,528.84/617,352.42 = 127,241.55/x
  3. Step 3: Cross multiply
    411,528.84x = 617,352.42 × 127,241.55
  4. Step 4: Simplify right side
    411,528.84x = 78,552,878,817.05
  5. Step 5: Solve for x
    x = 78,552,878,817.05/411,528.84
  6. Step 6: Final answer
    x = 190,880.62

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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.