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Finding the Fourth Proportional to 235,439.94, 353,381.88 and 85,824.84

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Solution

The fourth proportional to 235,439.94, 353,381.88 and 85,824.84 is: 128,818.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    235,439.94 : 353,381.88 = 85,824.84 : x
  2. Step 2: Convert to fraction form
    235,439.94/353,381.88 = 85,824.84/x
  3. Step 3: Cross multiply
    235,439.94x = 353,381.88 × 85,824.84
  4. Step 4: Simplify right side
    235,439.94x = 30,328,943,309.90
  5. Step 5: Solve for x
    x = 30,328,943,309.90/235,439.94
  6. Step 6: Final answer
    x = 128,818.17

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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.