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Finding the Fourth Proportional to 109,677.80, 164,516.70 and 83,433.80

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Solution

The fourth proportional to 109,677.80, 164,516.70 and 83,433.80 is: 125,150.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,677.80 : 164,516.70 = 83,433.80 : x
  2. Step 2: Convert to fraction form
    109,677.80/164,516.70 = 83,433.80/x
  3. Step 3: Cross multiply
    109,677.80x = 164,516.70 × 83,433.80
  4. Step 4: Simplify right side
    109,677.80x = 13,726,253,444.46
  5. Step 5: Solve for x
    x = 13,726,253,444.46/109,677.80
  6. Step 6: Final answer
    x = 125,150.70

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.