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Finding the Fourth Proportional to 606,927.40, 910,391.10 and 407,861.80

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Solution

The fourth proportional to 606,927.40, 910,391.10 and 407,861.80 is: 611,792.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    606,927.40 : 910,391.10 = 407,861.80 : x
  2. Step 2: Convert to fraction form
    606,927.40/910,391.10 = 407,861.80/x
  3. Step 3: Cross multiply
    606,927.40x = 910,391.10 × 407,861.80
  4. Step 4: Simplify right side
    606,927.40x = 371,313,752,749.98
  5. Step 5: Solve for x
    x = 371,313,752,749.98/606,927.40
  6. Step 6: Final answer
    x = 611,792.70

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Similar ratio
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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.