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Finding the Fourth Proportional to 356,805.30, 492,414.08 and 235,734.20

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Solution

The fourth proportional to 356,805.30, 492,414.08 and 235,734.20 is: 325,328.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    356,805.30 : 492,414.08 = 235,734.20 : x
  2. Step 2: Convert to fraction form
    356,805.30/492,414.08 = 235,734.20/x
  3. Step 3: Cross multiply
    356,805.30x = 492,414.08 × 235,734.20
  4. Step 4: Simplify right side
    356,805.30x = 116,078,835,576.80
  5. Step 5: Solve for x
    x = 116,078,835,576.80/356,805.30
  6. Step 6: Final answer
    x = 325,328.23

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.