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Finding the Fourth Proportional to 384,403.80, 575,730.90 and 197,196.60

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Solution

The fourth proportional to 384,403.80, 575,730.90 and 197,196.60 is: 295,346.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    384,403.80 : 575,730.90 = 197,196.60 : x
  2. Step 2: Convert to fraction form
    384,403.80/575,730.90 = 197,196.60/x
  3. Step 3: Cross multiply
    384,403.80x = 575,730.90 × 197,196.60
  4. Step 4: Simplify right side
    384,403.80x = 113,532,175,994.94
  5. Step 5: Solve for x
    x = 113,532,175,994.94/384,403.80
  6. Step 6: Final answer
    x = 295,346.13

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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.