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Finding the Fourth Proportional to 586,336.20, 879,504.30 and 521,017.80

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Solution

The fourth proportional to 586,336.20, 879,504.30 and 521,017.80 is: 781,526.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    586,336.20 : 879,504.30 = 521,017.80 : x
  2. Step 2: Convert to fraction form
    586,336.20/879,504.30 = 521,017.80/x
  3. Step 3: Cross multiply
    586,336.20x = 879,504.30 × 521,017.80
  4. Step 4: Simplify right side
    586,336.20x = 458,237,395,476.54
  5. Step 5: Solve for x
    x = 458,237,395,476.54/586,336.20
  6. Step 6: Final answer
    x = 781,526.70

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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.