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Finding the Fourth Proportional to 156,909.05, 216,533.88 and 88,939.11

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Solution

The fourth proportional to 156,909.05, 216,533.88 and 88,939.11 is: 122,735.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,909.05 : 216,533.88 = 88,939.11 : x
  2. Step 2: Convert to fraction form
    156,909.05/216,533.88 = 88,939.11/x
  3. Step 3: Cross multiply
    156,909.05x = 216,533.88 × 88,939.11
  4. Step 4: Simplify right side
    156,909.05x = 19,258,330,572.05
  5. Step 5: Solve for x
    x = 19,258,330,572.05/156,909.05
  6. Step 6: Final answer
    x = 122,735.63

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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.