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Finding the Fourth Proportional to 209,168.91, 288,654.90 and 113,675.63

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Solution

The fourth proportional to 209,168.91, 288,654.90 and 113,675.63 is: 156,873.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,168.91 : 288,654.90 = 113,675.63 : x
  2. Step 2: Convert to fraction form
    209,168.91/288,654.90 = 113,675.63/x
  3. Step 3: Cross multiply
    209,168.91x = 288,654.90 × 113,675.63
  4. Step 4: Simplify right side
    209,168.91x = 32,813,026,166.81
  5. Step 5: Solve for x
    x = 32,813,026,166.81/209,168.91
  6. Step 6: Final answer
    x = 156,873.34

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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.