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Finding the Fourth Proportional to 411,531.20, 617,296.80 and 366,916.40

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Solution

The fourth proportional to 411,531.20, 617,296.80 and 366,916.40 is: 550,374.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    411,531.20 : 617,296.80 = 366,916.40 : x
  2. Step 2: Convert to fraction form
    411,531.20/617,296.80 = 366,916.40/x
  3. Step 3: Cross multiply
    411,531.20x = 617,296.80 × 366,916.40
  4. Step 4: Simplify right side
    411,531.20x = 226,496,319,587.52
  5. Step 5: Solve for x
    x = 226,496,319,587.52/411,531.20
  6. Step 6: Final answer
    x = 550,374.60

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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.