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Finding the Fourth Proportional to 156,271.92, 215,655.48 and 84,652.56

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Solution

The fourth proportional to 156,271.92, 215,655.48 and 84,652.56 is: 116,820.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,271.92 : 215,655.48 = 84,652.56 : x
  2. Step 2: Convert to fraction form
    156,271.92/215,655.48 = 84,652.56/x
  3. Step 3: Cross multiply
    156,271.92x = 215,655.48 × 84,652.56
  4. Step 4: Simplify right side
    156,271.92x = 18,255,788,460.03
  5. Step 5: Solve for x
    x = 18,255,788,460.03/156,271.92
  6. Step 6: Final answer
    x = 116,820.66

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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.