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Finding the Fourth Proportional to 109,415.80, 164,123.70 and 95,591.80

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Solution

The fourth proportional to 109,415.80, 164,123.70 and 95,591.80 is: 143,387.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,415.80 : 164,123.70 = 95,591.80 : x
  2. Step 2: Convert to fraction form
    109,415.80/164,123.70 = 95,591.80/x
  3. Step 3: Cross multiply
    109,415.80x = 164,123.70 × 95,591.80
  4. Step 4: Simplify right side
    109,415.80x = 15,688,879,905.66
  5. Step 5: Solve for x
    x = 15,688,879,905.66/109,415.80
  6. Step 6: Final answer
    x = 143,387.70

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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.