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Finding the Fourth Proportional to 156,973.64, 216,622.04 and 85,353.68

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Solution

The fourth proportional to 156,973.64, 216,622.04 and 85,353.68 is: 117,787.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,973.64 : 216,622.04 = 85,353.68 : x
  2. Step 2: Convert to fraction form
    156,973.64/216,622.04 = 85,353.68/x
  3. Step 3: Cross multiply
    156,973.64x = 216,622.04 × 85,353.68
  4. Step 4: Simplify right side
    156,973.64x = 18,489,488,283.11
  5. Step 5: Solve for x
    x = 18,489,488,283.11/156,973.64
  6. Step 6: Final answer
    x = 117,787.22

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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.