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Finding the Fourth Proportional to 127,560.71, 191,368.53 and 38,821.37

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Solution

The fourth proportional to 127,560.71, 191,368.53 and 38,821.37 is: 58,240.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,560.71 : 191,368.53 = 38,821.37 : x
  2. Step 2: Convert to fraction form
    127,560.71/191,368.53 = 38,821.37/x
  3. Step 3: Cross multiply
    127,560.71x = 191,368.53 × 38,821.37
  4. Step 4: Simplify right side
    127,560.71x = 7,429,187,552.64
  5. Step 5: Solve for x
    x = 7,429,187,552.64/127,560.71
  6. Step 6: Final answer
    x = 58,240.41

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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.