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Finding the Fourth Proportional to 576,053.20, 865,116.60 and 557,390.80

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Solution

The fourth proportional to 576,053.20, 865,116.60 and 557,390.80 is: 837,089.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    576,053.20 : 865,116.60 = 557,390.80 : x
  2. Step 2: Convert to fraction form
    576,053.20/865,116.60 = 557,390.80/x
  3. Step 3: Cross multiply
    576,053.20x = 865,116.60 × 557,390.80
  4. Step 4: Simplify right side
    576,053.20x = 482,208,033,767.28
  5. Step 5: Solve for x
    x = 482,208,033,767.28/576,053.20
  6. Step 6: Final answer
    x = 837,089.41

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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.