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Finding the Fourth Proportional to 127,085.59, 190,629.76 and 38,339.87

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Solution

The fourth proportional to 127,085.59, 190,629.76 and 38,339.87 is: 57,510.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,085.59 : 190,629.76 = 38,339.87 : x
  2. Step 2: Convert to fraction form
    127,085.59/190,629.76 = 38,339.87/x
  3. Step 3: Cross multiply
    127,085.59x = 190,629.76 × 38,339.87
  4. Step 4: Simplify right side
    127,085.59x = 7,308,720,216.53
  5. Step 5: Solve for x
    x = 7,308,720,216.53/127,085.59
  6. Step 6: Final answer
    x = 57,510.22

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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.