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Finding the Fourth Proportional to 530,836.80, 797,810.40 and 521,505.60

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Solution

The fourth proportional to 530,836.80, 797,810.40 and 521,505.60 is: 783,786.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    530,836.80 : 797,810.40 = 521,505.60 : x
  2. Step 2: Convert to fraction form
    530,836.80/797,810.40 = 521,505.60/x
  3. Step 3: Cross multiply
    530,836.80x = 797,810.40 × 521,505.60
  4. Step 4: Simplify right side
    530,836.80x = 416,062,591,338.24
  5. Step 5: Solve for x
    x = 416,062,591,338.24/530,836.80
  6. Step 6: Final answer
    x = 783,786.26

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1.5x scale

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.