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Finding the Fourth Proportional to 223,551.69, 308,503.41 and 121,578.12

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Solution

The fourth proportional to 223,551.69, 308,503.41 and 121,578.12 is: 167,778.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    223,551.69 : 308,503.41 = 121,578.12 : x
  2. Step 2: Convert to fraction form
    223,551.69/308,503.41 = 121,578.12/x
  3. Step 3: Cross multiply
    223,551.69x = 308,503.41 × 121,578.12
  4. Step 4: Simplify right side
    223,551.69x = 37,507,264,601.39
  5. Step 5: Solve for x
    x = 37,507,264,601.39/223,551.69
  6. Step 6: Final answer
    x = 167,778.94

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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.