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Finding the Fourth Proportional to 223,885.68, 308,725.45 and 172,906.71

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Solution

The fourth proportional to 223,885.68, 308,725.45 and 172,906.71 is: 238,428.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    223,885.68 : 308,725.45 = 172,906.71 : x
  2. Step 2: Convert to fraction form
    223,885.68/308,725.45 = 172,906.71/x
  3. Step 3: Cross multiply
    223,885.68x = 308,725.45 × 172,906.71
  4. Step 4: Simplify right side
    223,885.68x = 53,380,701,852.77
  5. Step 5: Solve for x
    x = 53,380,701,852.77/223,885.68
  6. Step 6: Final answer
    x = 238,428.39

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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.