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Finding the Fourth Proportional to 723,858.19, 998,925.47 and 401,568.28

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Solution

The fourth proportional to 723,858.19, 998,925.47 and 401,568.28 is: 554,164.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    723,858.19 : 998,925.47 = 401,568.28 : x
  2. Step 2: Convert to fraction form
    723,858.19/998,925.47 = 401,568.28/x
  3. Step 3: Cross multiply
    723,858.19x = 998,925.47 × 401,568.28
  4. Step 4: Simplify right side
    723,858.19x = 401,136,782,836.09
  5. Step 5: Solve for x
    x = 401,136,782,836.09/723,858.19
  6. Step 6: Final answer
    x = 554,164.87

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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.