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Finding the Fourth Proportional to 289,341.60, 399,114.72 and 191,224.68

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Solution

The fourth proportional to 289,341.60, 399,114.72 and 191,224.68 is: 263,773.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,341.60 : 399,114.72 = 191,224.68 : x
  2. Step 2: Convert to fraction form
    289,341.60/399,114.72 = 191,224.68/x
  3. Step 3: Cross multiply
    289,341.60x = 399,114.72 × 191,224.68
  4. Step 4: Simplify right side
    289,341.60x = 76,320,584,615.29
  5. Step 5: Solve for x
    x = 76,320,584,615.29/289,341.60
  6. Step 6: Final answer
    x = 263,773.29

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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.