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Finding the Fourth Proportional to 156,630.53, 216,152.21 and 85,011.41

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Solution

The fourth proportional to 156,630.53, 216,152.21 and 85,011.41 is: 117,316.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,630.53 : 216,152.21 = 85,011.41 : x
  2. Step 2: Convert to fraction form
    156,630.53/216,152.21 = 85,011.41/x
  3. Step 3: Cross multiply
    156,630.53x = 216,152.21 × 85,011.41
  4. Step 4: Simplify right side
    156,630.53x = 18,375,403,721.66
  5. Step 5: Solve for x
    x = 18,375,403,721.66/156,630.53
  6. Step 6: Final answer
    x = 117,316.87

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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.