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Finding the Fourth Proportional to 118,615.13, 177,725.86 and 83,480.98

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Solution

The fourth proportional to 118,615.13, 177,725.86 and 83,480.98 is: 125,082.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,615.13 : 177,725.86 = 83,480.98 : x
  2. Step 2: Convert to fraction form
    118,615.13/177,725.86 = 83,480.98/x
  3. Step 3: Cross multiply
    118,615.13x = 177,725.86 × 83,480.98
  4. Step 4: Simplify right side
    118,615.13x = 14,836,728,075.51
  5. Step 5: Solve for x
    x = 14,836,728,075.51/118,615.13
  6. Step 6: Final answer
    x = 125,082.93

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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.