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Finding the Fourth Proportional to 525,796.20, 788,694.30 and 521,130.60

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Solution

The fourth proportional to 525,796.20, 788,694.30 and 521,130.60 is: 781,695.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    525,796.20 : 788,694.30 = 521,130.60 : x
  2. Step 2: Convert to fraction form
    525,796.20/788,694.30 = 521,130.60/x
  3. Step 3: Cross multiply
    525,796.20x = 788,694.30 × 521,130.60
  4. Step 4: Simplify right side
    525,796.20x = 411,012,733,775.58
  5. Step 5: Solve for x
    x = 411,012,733,775.58/525,796.20
  6. Step 6: Final answer
    x = 781,695.90

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Similar ratio
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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.