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Finding the Fourth Proportional to 156,957.38, 216,610.04 and 85,335.86

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Solution

The fourth proportional to 156,957.38, 216,610.04 and 85,335.86 is: 117,768.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,957.38 : 216,610.04 = 85,335.86 : x
  2. Step 2: Convert to fraction form
    156,957.38/216,610.04 = 85,335.86/x
  3. Step 3: Cross multiply
    156,957.38x = 216,610.04 × 85,335.86
  4. Step 4: Simplify right side
    156,957.38x = 18,484,604,048.03
  5. Step 5: Solve for x
    x = 18,484,604,048.03/156,957.38
  6. Step 6: Final answer
    x = 117,768.30

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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.