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Finding the Fourth Proportional to 719,863.65, 993,406.01 and 397,595.84

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Solution

The fourth proportional to 719,863.65, 993,406.01 and 397,595.84 is: 548,679.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    719,863.65 : 993,406.01 = 397,595.84 : x
  2. Step 2: Convert to fraction form
    719,863.65/993,406.01 = 397,595.84/x
  3. Step 3: Cross multiply
    719,863.65x = 993,406.01 × 397,595.84
  4. Step 4: Simplify right side
    719,863.65x = 394,974,090,051.99
  5. Step 5: Solve for x
    x = 394,974,090,051.99/719,863.65
  6. Step 6: Final answer
    x = 548,679.03

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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.