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Finding the Fourth Proportional to 525,991.80, 788,598.90 and 289,601.40

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Solution

The fourth proportional to 525,991.80, 788,598.90 and 289,601.40 is: 434,188.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    525,991.80 : 788,598.90 = 289,601.40 : x
  2. Step 2: Convert to fraction form
    525,991.80/788,598.90 = 289,601.40/x
  3. Step 3: Cross multiply
    525,991.80x = 788,598.90 × 289,601.40
  4. Step 4: Simplify right side
    525,991.80x = 228,379,345,478.46
  5. Step 5: Solve for x
    x = 228,379,345,478.46/525,991.80
  6. Step 6: Final answer
    x = 434,188.03

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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.