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Finding the Fourth Proportional to 591,717.84, 816,570.72 and 319,784.82

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Solution

The fourth proportional to 591,717.84, 816,570.72 and 319,784.82 is: 441,303.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    591,717.84 : 816,570.72 = 319,784.82 : x
  2. Step 2: Convert to fraction form
    591,717.84/816,570.72 = 319,784.82/x
  3. Step 3: Cross multiply
    591,717.84x = 816,570.72 × 319,784.82
  4. Step 4: Simplify right side
    591,717.84x = 261,126,920,712.47
  5. Step 5: Solve for x
    x = 261,126,920,712.47/591,717.84
  6. Step 6: Final answer
    x = 441,303.11

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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.