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Finding the Fourth Proportional to 156,997.62, 216,580.51 and 93,290.30

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Solution

The fourth proportional to 156,997.62, 216,580.51 and 93,290.30 is: 128,695.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,997.62 : 216,580.51 = 93,290.30 : x
  2. Step 2: Convert to fraction form
    156,997.62/216,580.51 = 93,290.30/x
  3. Step 3: Cross multiply
    156,997.62x = 216,580.51 × 93,290.30
  4. Step 4: Simplify right side
    156,997.62x = 20,204,860,752.05
  5. Step 5: Solve for x
    x = 20,204,860,752.05/156,997.62
  6. Step 6: Final answer
    x = 128,695.33

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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.