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Finding the Fourth Proportional to 230,573.86, 318,193.78 and 128,595.94

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Solution

The fourth proportional to 230,573.86, 318,193.78 and 128,595.94 is: 177,463.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    230,573.86 : 318,193.78 = 128,595.94 : x
  2. Step 2: Convert to fraction form
    230,573.86/318,193.78 = 128,595.94/x
  3. Step 3: Cross multiply
    230,573.86x = 318,193.78 × 128,595.94
  4. Step 4: Simplify right side
    230,573.86x = 40,918,428,241.25
  5. Step 5: Solve for x
    x = 40,918,428,241.25/230,573.86
  6. Step 6: Final answer
    x = 177,463.43

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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.