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Finding the Fourth Proportional to 223,666.25, 308,667.96 and 128,191.41

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Solution

The fourth proportional to 223,666.25, 308,667.96 and 128,191.41 is: 176,909.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    223,666.25 : 308,667.96 = 128,191.41 : x
  2. Step 2: Convert to fraction form
    223,666.25/308,667.96 = 128,191.41/x
  3. Step 3: Cross multiply
    223,666.25x = 308,667.96 × 128,191.41
  4. Step 4: Simplify right side
    223,666.25x = 39,568,581,465.42
  5. Step 5: Solve for x
    x = 39,568,581,465.42/223,666.25
  6. Step 6: Final answer
    x = 176,909.04

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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.