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Finding the Fourth Proportional to 521,861.76, 782,669.88 and 294,255.18

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Solution

The fourth proportional to 521,861.76, 782,669.88 and 294,255.18 is: 441,313.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    521,861.76 : 782,669.88 = 294,255.18 : x
  2. Step 2: Convert to fraction form
    521,861.76/782,669.88 = 294,255.18/x
  3. Step 3: Cross multiply
    521,861.76x = 782,669.88 × 294,255.18
  4. Step 4: Simplify right side
    521,861.76x = 230,304,666,419.98
  5. Step 5: Solve for x
    x = 230,304,666,419.98/521,861.76
  6. Step 6: Final answer
    x = 441,313.55

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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.