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Finding the Fourth Proportional to 191,999.55, 287,836.65 and 79,609.62

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Solution

The fourth proportional to 191,999.55, 287,836.65 and 79,609.62 is: 119,346.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,999.55 : 287,836.65 = 79,609.62 : x
  2. Step 2: Convert to fraction form
    191,999.55/287,836.65 = 79,609.62/x
  3. Step 3: Cross multiply
    191,999.55x = 287,836.65 × 79,609.62
  4. Step 4: Simplify right side
    191,999.55x = 22,914,567,407.96
  5. Step 5: Solve for x
    x = 22,914,567,407.96/191,999.55
  6. Step 6: Final answer
    x = 119,346.98

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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.