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Finding the Fourth Proportional to 127,729.16, 191,593.72 and 38,983.12

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Solution

The fourth proportional to 127,729.16, 191,593.72 and 38,983.12 is: 58,474.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,729.16 : 191,593.72 = 38,983.12 : x
  2. Step 2: Convert to fraction form
    127,729.16/191,593.72 = 38,983.12/x
  3. Step 3: Cross multiply
    127,729.16x = 191,593.72 × 38,983.12
  4. Step 4: Simplify right side
    127,729.16x = 7,468,920,978.01
  5. Step 5: Solve for x
    x = 7,468,920,978.01/127,729.16
  6. Step 6: Final answer
    x = 58,474.67

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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.