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Finding the Fourth Proportional to 617,814.33, 922,964.48 and 399,897.90

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Solution

The fourth proportional to 617,814.33, 922,964.48 and 399,897.90 is: 597,415.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    617,814.33 : 922,964.48 = 399,897.90 : x
  2. Step 2: Convert to fraction form
    617,814.33/922,964.48 = 399,897.90/x
  3. Step 3: Cross multiply
    617,814.33x = 922,964.48 × 399,897.90
  4. Step 4: Simplify right side
    617,814.33x = 369,091,557,902.79
  5. Step 5: Solve for x
    x = 369,091,557,902.79/617,814.33
  6. Step 6: Final answer
    x = 597,415.01

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.