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Finding the Fourth Proportional to 235,638.12, 325,189.44 and 135,055.56

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Solution

The fourth proportional to 235,638.12, 325,189.44 and 135,055.56 is: 186,381.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    235,638.12 : 325,189.44 = 135,055.56 : x
  2. Step 2: Convert to fraction form
    235,638.12/325,189.44 = 135,055.56/x
  3. Step 3: Cross multiply
    235,638.12x = 325,189.44 × 135,055.56
  4. Step 4: Simplify right side
    235,638.12x = 43,918,641,925.29
  5. Step 5: Solve for x
    x = 43,918,641,925.29/235,638.12
  6. Step 6: Final answer
    x = 186,381.74

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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.