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Finding the Fourth Proportional to 289,449.96, 399,440.94 and 176,272.71

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Solution

The fourth proportional to 289,449.96, 399,440.94 and 176,272.71 is: 243,256.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,449.96 : 399,440.94 = 176,272.71 : x
  2. Step 2: Convert to fraction form
    289,449.96/399,440.94 = 176,272.71/x
  3. Step 3: Cross multiply
    289,449.96x = 399,440.94 × 176,272.71
  4. Step 4: Simplify right side
    289,449.96x = 70,410,536,978.75
  5. Step 5: Solve for x
    x = 70,410,536,978.75/289,449.96
  6. Step 6: Final answer
    x = 243,256.34

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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.