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Finding the Fourth Proportional to 385,713.41, 578,608.19 and 132,960.63

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Solution

The fourth proportional to 385,713.41, 578,608.19 and 132,960.63 is: 199,454.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    385,713.41 : 578,608.19 = 132,960.63 : x
  2. Step 2: Convert to fraction form
    385,713.41/578,608.19 = 132,960.63/x
  3. Step 3: Cross multiply
    385,713.41x = 578,608.19 × 132,960.63
  4. Step 4: Simplify right side
    385,713.41x = 76,932,108,800.76
  5. Step 5: Solve for x
    x = 76,932,108,800.76/385,713.41
  6. Step 6: Final answer
    x = 199,454.07

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.