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Finding the Fourth Proportional to 188,059.60, 281,909.60 and 69,699.20

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Solution

The fourth proportional to 188,059.60, 281,909.60 and 69,699.20 is: 104,482.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    188,059.60 : 281,909.60 = 69,699.20 : x
  2. Step 2: Convert to fraction form
    188,059.60/281,909.60 = 69,699.20/x
  3. Step 3: Cross multiply
    188,059.60x = 281,909.60 × 69,699.20
  4. Step 4: Simplify right side
    188,059.60x = 19,648,873,592.32
  5. Step 5: Solve for x
    x = 19,648,873,592.32/188,059.60
  6. Step 6: Final answer
    x = 104,482.16

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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.