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Finding the Fourth Proportional to 617,328.81, 930,620.21 and 576,179.04

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Solution

The fourth proportional to 617,328.81, 930,620.21 and 576,179.04 is: 868,587.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    617,328.81 : 930,620.21 = 576,179.04 : x
  2. Step 2: Convert to fraction form
    617,328.81/930,620.21 = 576,179.04/x
  3. Step 3: Cross multiply
    617,328.81x = 930,620.21 × 576,179.04
  4. Step 4: Simplify right side
    617,328.81x = 536,203,860,642.85
  5. Step 5: Solve for x
    x = 536,203,860,642.85/617,328.81
  6. Step 6: Final answer
    x = 868,587.13

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.