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Finding the Fourth Proportional to 209,847.68, 289,589.80 and 114,354.46

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Solution

The fourth proportional to 209,847.68, 289,589.80 and 114,354.46 is: 157,809.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,847.68 : 289,589.80 = 114,354.46 : x
  2. Step 2: Convert to fraction form
    209,847.68/289,589.80 = 114,354.46/x
  3. Step 3: Cross multiply
    209,847.68x = 289,589.80 × 114,354.46
  4. Step 4: Simplify right side
    209,847.68x = 33,115,885,200.51
  5. Step 5: Solve for x
    x = 33,115,885,200.51/209,847.68
  6. Step 6: Final answer
    x = 157,809.16

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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.