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Finding the Fourth Proportional to 705,277.20, 973,294.11 and 399,345.51

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Solution

The fourth proportional to 705,277.20, 973,294.11 and 399,345.51 is: 551,103.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    705,277.20 : 973,294.11 = 399,345.51 : x
  2. Step 2: Convert to fraction form
    705,277.20/973,294.11 = 399,345.51/x
  3. Step 3: Cross multiply
    705,277.20x = 973,294.11 × 399,345.51
  4. Step 4: Simplify right side
    705,277.20x = 388,680,637,885.35
  5. Step 5: Solve for x
    x = 388,680,637,885.35/705,277.20
  6. Step 6: Final answer
    x = 551,103.37

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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.