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Finding the Fourth Proportional to 156,604.81, 216,114.77 and 84,984.83

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Solution

The fourth proportional to 156,604.81, 216,114.77 and 84,984.83 is: 117,279.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,604.81 : 216,114.77 = 84,984.83 : x
  2. Step 2: Convert to fraction form
    156,604.81/216,114.77 = 84,984.83/x
  3. Step 3: Cross multiply
    156,604.81x = 216,114.77 × 84,984.83
  4. Step 4: Simplify right side
    156,604.81x = 18,366,476,221.43
  5. Step 5: Solve for x
    x = 18,366,476,221.43/156,604.81
  6. Step 6: Final answer
    x = 117,279.14

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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.