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Finding the Fourth Proportional to 191,766.72, 287,548.70 and 85,104.32

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Solution

The fourth proportional to 191,766.72, 287,548.70 and 85,104.32 is: 127,611.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,766.72 : 287,548.70 = 85,104.32 : x
  2. Step 2: Convert to fraction form
    191,766.72/287,548.70 = 85,104.32/x
  3. Step 3: Cross multiply
    191,766.72x = 287,548.70 × 85,104.32
  4. Step 4: Simplify right side
    191,766.72x = 24,471,636,580.38
  5. Step 5: Solve for x
    x = 24,471,636,580.38/191,766.72
  6. Step 6: Final answer
    x = 127,611.49

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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.