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Finding the Fourth Proportional to 209,581.30, 289,220.76 and 114,087.76

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Solution

The fourth proportional to 209,581.30, 289,220.76 and 114,087.76 is: 157,440.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,581.30 : 289,220.76 = 114,087.76 : x
  2. Step 2: Convert to fraction form
    209,581.30/289,220.76 = 114,087.76/x
  3. Step 3: Cross multiply
    209,581.30x = 289,220.76 × 114,087.76
  4. Step 4: Simplify right side
    209,581.30x = 32,996,548,653.90
  5. Step 5: Solve for x
    x = 32,996,548,653.90/209,581.30
  6. Step 6: Final answer
    x = 157,440.33

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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.