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Finding the Fourth Proportional to 209,354.90, 313,985.18 and 59,591.88

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Solution

The fourth proportional to 209,354.90, 313,985.18 and 59,591.88 is: 89,374.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,354.90 : 313,985.18 = 59,591.88 : x
  2. Step 2: Convert to fraction form
    209,354.90/313,985.18 = 59,591.88/x
  3. Step 3: Cross multiply
    209,354.90x = 313,985.18 × 59,591.88
  4. Step 4: Simplify right side
    209,354.90x = 18,710,967,168.34
  5. Step 5: Solve for x
    x = 18,710,967,168.34/209,354.90
  6. Step 6: Final answer
    x = 89,374.39

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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.