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Finding the Fourth Proportional to 188,892.19, 260,678.11 and 117,311.68

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Solution

The fourth proportional to 188,892.19, 260,678.11 and 117,311.68 is: 161,894.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    188,892.19 : 260,678.11 = 117,311.68 : x
  2. Step 2: Convert to fraction form
    188,892.19/260,678.11 = 117,311.68/x
  3. Step 3: Cross multiply
    188,892.19x = 260,678.11 × 117,311.68
  4. Step 4: Simplify right side
    188,892.19x = 30,580,587,023.32
  5. Step 5: Solve for x
    x = 30,580,587,023.32/188,892.19
  6. Step 6: Final answer
    x = 161,894.40

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.