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Finding the Fourth Proportional to 235,570.96, 325,084.50 and 128,141.86

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Solution

The fourth proportional to 235,570.96, 325,084.50 and 128,141.86 is: 176,833.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    235,570.96 : 325,084.50 = 128,141.86 : x
  2. Step 2: Convert to fraction form
    235,570.96/325,084.50 = 128,141.86/x
  3. Step 3: Cross multiply
    235,570.96x = 325,084.50 × 128,141.86
  4. Step 4: Simplify right side
    235,570.96x = 41,656,932,487.17
  5. Step 5: Solve for x
    x = 41,656,932,487.17/235,570.96
  6. Step 6: Final answer
    x = 176,833.90

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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.