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Finding the Fourth Proportional to 723,858.11, 998,925.36 and 401,568.21

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Solution

The fourth proportional to 723,858.11, 998,925.36 and 401,568.21 is: 554,164.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    723,858.11 : 998,925.36 = 401,568.21 : x
  2. Step 2: Convert to fraction form
    723,858.11/998,925.36 = 401,568.21/x
  3. Step 3: Cross multiply
    723,858.11x = 998,925.36 × 401,568.21
  4. Step 4: Simplify right side
    723,858.11x = 401,136,668,738.81
  5. Step 5: Solve for x
    x = 401,136,668,738.81/723,858.11
  6. Step 6: Final answer
    x = 554,164.78

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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.