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Finding the Fourth Proportional to 156,603.71, 216,113.69 and 84,983.71

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Solution

The fourth proportional to 156,603.71, 216,113.69 and 84,983.71 is: 117,277.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,603.71 : 216,113.69 = 84,983.71 : x
  2. Step 2: Convert to fraction form
    156,603.71/216,113.69 = 84,983.71/x
  3. Step 3: Cross multiply
    156,603.71x = 216,113.69 × 84,983.71
  4. Step 4: Simplify right side
    156,603.71x = 18,366,143,157.99
  5. Step 5: Solve for x
    x = 18,366,143,157.99/156,603.71
  6. Step 6: Final answer
    x = 117,277.83

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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.