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Finding the Fourth Proportional to 156,365.76, 215,779.44 and 92,665.80

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Solution

The fourth proportional to 156,365.76, 215,779.44 and 92,665.80 is: 127,875.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,365.76 : 215,779.44 = 92,665.80 : x
  2. Step 2: Convert to fraction form
    156,365.76/215,779.44 = 92,665.80/x
  3. Step 3: Cross multiply
    156,365.76x = 215,779.44 × 92,665.80
  4. Step 4: Simplify right side
    156,365.76x = 19,995,374,431.15
  5. Step 5: Solve for x
    x = 19,995,374,431.15/156,365.76
  6. Step 6: Final answer
    x = 127,875.66

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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.