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Finding the Fourth Proportional to 525,712.60, 788,396.10 and 193,245.40

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Solution

The fourth proportional to 525,712.60, 788,396.10 and 193,245.40 is: 289,804.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    525,712.60 : 788,396.10 = 193,245.40 : x
  2. Step 2: Convert to fraction form
    525,712.60/788,396.10 = 193,245.40/x
  3. Step 3: Cross multiply
    525,712.60x = 788,396.10 × 193,245.40
  4. Step 4: Simplify right side
    525,712.60x = 152,353,919,702.94
  5. Step 5: Solve for x
    x = 152,353,919,702.94/525,712.60
  6. Step 6: Final answer
    x = 289,804.58

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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.