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Finding the Fourth Proportional to 576,046.20, 865,106.10 and 557,383.80

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Solution

The fourth proportional to 576,046.20, 865,106.10 and 557,383.80 is: 837,078.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    576,046.20 : 865,106.10 = 557,383.80 : x
  2. Step 2: Convert to fraction form
    576,046.20/865,106.10 = 557,383.80/x
  3. Step 3: Cross multiply
    576,046.20x = 865,106.10 × 557,383.80
  4. Step 4: Simplify right side
    576,046.20x = 482,196,125,421.18
  5. Step 5: Solve for x
    x = 482,196,125,421.18/576,046.20
  6. Step 6: Final answer
    x = 837,078.91

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.