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Finding the Fourth Proportional to 530,838.80, 797,813.40 and 521,507.60

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Solution

The fourth proportional to 530,838.80, 797,813.40 and 521,507.60 is: 783,789.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    530,838.80 : 797,813.40 = 521,507.60 : x
  2. Step 2: Convert to fraction form
    530,838.80/797,813.40 = 521,507.60/x
  3. Step 3: Cross multiply
    530,838.80x = 797,813.40 × 521,507.60
  4. Step 4: Simplify right side
    530,838.80x = 416,065,751,481.84
  5. Step 5: Solve for x
    x = 416,065,751,481.84/530,838.80
  6. Step 6: Final answer
    x = 783,789.26

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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.