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Finding the Fourth Proportional to 685,329.99, 945,624.16 and 443,579.01

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Solution

The fourth proportional to 685,329.99, 945,624.16 and 443,579.01 is: 612,054.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    685,329.99 : 945,624.16 = 443,579.01 : x
  2. Step 2: Convert to fraction form
    685,329.99/945,624.16 = 443,579.01/x
  3. Step 3: Cross multiply
    685,329.99x = 945,624.16 × 443,579.01
  4. Step 4: Simplify right side
    685,329.99x = 419,459,024,069.84
  5. Step 5: Solve for x
    x = 419,459,024,069.84/685,329.99
  6. Step 6: Final answer
    x = 612,054.09

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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.