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Finding the Fourth Proportional to 127,532.15, 191,134.20 and 77,559.20

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Solution

The fourth proportional to 127,532.15, 191,134.20 and 77,559.20 is: 116,239.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,532.15 : 191,134.20 = 77,559.20 : x
  2. Step 2: Convert to fraction form
    127,532.15/191,134.20 = 77,559.20/x
  3. Step 3: Cross multiply
    127,532.15x = 191,134.20 × 77,559.20
  4. Step 4: Simplify right side
    127,532.15x = 14,824,215,644.64
  5. Step 5: Solve for x
    x = 14,824,215,644.64/127,532.15
  6. Step 6: Final answer
    x = 116,239.05

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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.