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Finding the Fourth Proportional to 385,816.83, 532,611.83 and 256,969.73

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Solution

The fourth proportional to 385,816.83, 532,611.83 and 256,969.73 is: 354,741.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    385,816.83 : 532,611.83 = 256,969.73 : x
  2. Step 2: Convert to fraction form
    385,816.83/532,611.83 = 256,969.73/x
  3. Step 3: Cross multiply
    385,816.83x = 532,611.83 × 256,969.73
  4. Step 4: Simplify right side
    385,816.83x = 136,865,116,129.27
  5. Step 5: Solve for x
    x = 136,865,116,129.27/385,816.83
  6. Step 6: Final answer
    x = 354,741.18

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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.