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Finding the Fourth Proportional to 127,552.80, 191,321.10 and 43,312.80

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Solution

The fourth proportional to 127,552.80, 191,321.10 and 43,312.80 is: 64,966.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,552.80 : 191,321.10 = 43,312.80 : x
  2. Step 2: Convert to fraction form
    127,552.80/191,321.10 = 43,312.80/x
  3. Step 3: Cross multiply
    127,552.80x = 191,321.10 × 43,312.80
  4. Step 4: Simplify right side
    127,552.80x = 8,286,652,540.08
  5. Step 5: Solve for x
    x = 8,286,652,540.08/127,552.80
  6. Step 6: Final answer
    x = 64,966.45

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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.