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Finding the Fourth Proportional to 85,145.70, 127,726.24 and 32,555.64

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Solution

The fourth proportional to 85,145.70, 127,726.24 and 32,555.64 is: 48,836.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,145.70 : 127,726.24 = 32,555.64 : x
  2. Step 2: Convert to fraction form
    85,145.70/127,726.24 = 32,555.64/x
  3. Step 3: Cross multiply
    85,145.70x = 127,726.24 × 32,555.64
  4. Step 4: Simplify right side
    85,145.70x = 4,158,209,487.99
  5. Step 5: Solve for x
    x = 4,158,209,487.99/85,145.70
  6. Step 6: Final answer
    x = 48,836.40

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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.