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Finding the Fourth Proportional to 606,912.20, 910,368.30 and 291,206.60

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Solution

The fourth proportional to 606,912.20, 910,368.30 and 291,206.60 is: 436,809.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    606,912.20 : 910,368.30 = 291,206.60 : x
  2. Step 2: Convert to fraction form
    606,912.20/910,368.30 = 291,206.60/x
  3. Step 3: Cross multiply
    606,912.20x = 910,368.30 × 291,206.60
  4. Step 4: Simplify right side
    606,912.20x = 265,105,257,390.78
  5. Step 5: Solve for x
    x = 265,105,257,390.78/606,912.20
  6. Step 6: Final answer
    x = 436,809.90

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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.