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Finding the Fourth Proportional to 153,591.32, 211,947.18 and 85,606.04

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Solution

The fourth proportional to 153,591.32, 211,947.18 and 85,606.04 is: 118,131.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,591.32 : 211,947.18 = 85,606.04 : x
  2. Step 2: Convert to fraction form
    153,591.32/211,947.18 = 85,606.04/x
  3. Step 3: Cross multiply
    153,591.32x = 211,947.18 × 85,606.04
  4. Step 4: Simplify right side
    153,591.32x = 18,143,958,768.97
  5. Step 5: Solve for x
    x = 18,143,958,768.97/153,591.32
  6. Step 6: Final answer
    x = 118,131.41

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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.