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Finding the Fourth Proportional to 287,520.86, 396,391.65 and 201,363.86

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Solution

The fourth proportional to 287,520.86, 396,391.65 and 201,363.86 is: 277,611.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,520.86 : 396,391.65 = 201,363.86 : x
  2. Step 2: Convert to fraction form
    287,520.86/396,391.65 = 201,363.86/x
  3. Step 3: Cross multiply
    287,520.86x = 396,391.65 × 201,363.86
  4. Step 4: Simplify right side
    287,520.86x = 79,818,952,715.77
  5. Step 5: Solve for x
    x = 79,818,952,715.77/287,520.86
  6. Step 6: Final answer
    x = 277,611.00

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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.