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Finding the Fourth Proportional to 411,061.40, 616,446.30 and 144,830.60

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Solution

The fourth proportional to 411,061.40, 616,446.30 and 144,830.60 is: 217,194.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    411,061.40 : 616,446.30 = 144,830.60 : x
  2. Step 2: Convert to fraction form
    411,061.40/616,446.30 = 144,830.60/x
  3. Step 3: Cross multiply
    411,061.40x = 616,446.30 × 144,830.60
  4. Step 4: Simplify right side
    411,061.40x = 89,280,287,496.78
  5. Step 5: Solve for x
    x = 89,280,287,496.78/411,061.40
  6. Step 6: Final answer
    x = 217,194.53

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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.