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Finding the Fourth Proportional to 156,881.00, 216,497.21 and 85,261.07

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Solution

The fourth proportional to 156,881.00, 216,497.21 and 85,261.07 is: 117,661.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,881.00 : 216,497.21 = 85,261.07 : x
  2. Step 2: Convert to fraction form
    156,881.00/216,497.21 = 85,261.07/x
  3. Step 3: Cross multiply
    156,881.00x = 216,497.21 × 85,261.07
  4. Step 4: Simplify right side
    156,881.00x = 18,458,783,891.55
  5. Step 5: Solve for x
    x = 18,458,783,891.55/156,881.00
  6. Step 6: Final answer
    x = 117,661.05

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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.