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Finding the Fourth Proportional to 256,684.05, 354,235.50 and 143,506.80

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Solution

The fourth proportional to 256,684.05, 354,235.50 and 143,506.80 is: 198,045.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    256,684.05 : 354,235.50 = 143,506.80 : x
  2. Step 2: Convert to fraction form
    256,684.05/354,235.50 = 143,506.80/x
  3. Step 3: Cross multiply
    256,684.05x = 354,235.50 × 143,506.80
  4. Step 4: Simplify right side
    256,684.05x = 50,835,203,051.40
  5. Step 5: Solve for x
    x = 50,835,203,051.40/256,684.05
  6. Step 6: Final answer
    x = 198,045.82

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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.