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Finding the Fourth Proportional to 156,511.94, 215,972.19 and 88,535.12

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Solution

The fourth proportional to 156,511.94, 215,972.19 and 88,535.12 is: 122,170.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,511.94 : 215,972.19 = 88,535.12 : x
  2. Step 2: Convert to fraction form
    156,511.94/215,972.19 = 88,535.12/x
  3. Step 3: Cross multiply
    156,511.94x = 215,972.19 × 88,535.12
  4. Step 4: Simplify right side
    156,511.94x = 19,121,122,678.45
  5. Step 5: Solve for x
    x = 19,121,122,678.45/156,511.94
  6. Step 6: Final answer
    x = 122,170.38

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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.