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Finding the Fourth Proportional to 353,989.60, 531,598.80 and 188,101.60

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Solution

The fourth proportional to 353,989.60, 531,598.80 and 188,101.60 is: 282,478.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    353,989.60 : 531,598.80 = 188,101.60 : x
  2. Step 2: Convert to fraction form
    353,989.60/531,598.80 = 188,101.60/x
  3. Step 3: Cross multiply
    353,989.60x = 531,598.80 × 188,101.60
  4. Step 4: Simplify right side
    353,989.60x = 99,994,584,838.08
  5. Step 5: Solve for x
    x = 99,994,584,838.08/353,989.60
  6. Step 6: Final answer
    x = 282,478.88

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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.