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Finding the Fourth Proportional to 525,618.40, 788,485.20 and 509,029.60

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Solution

The fourth proportional to 525,618.40, 788,485.20 and 509,029.60 is: 763,600.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    525,618.40 : 788,485.20 = 509,029.60 : x
  2. Step 2: Convert to fraction form
    525,618.40/788,485.20 = 509,029.60/x
  3. Step 3: Cross multiply
    525,618.40x = 788,485.20 × 509,029.60
  4. Step 4: Simplify right side
    525,618.40x = 401,362,305,961.92
  5. Step 5: Solve for x
    x = 401,362,305,961.92/525,618.40
  6. Step 6: Final answer
    x = 763,600.18

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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.