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Finding the Fourth Proportional to 118,595.90, 177,952.28 and 55,420.38

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Solution

The fourth proportional to 118,595.90, 177,952.28 and 55,420.38 is: 83,157.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,595.90 : 177,952.28 = 55,420.38 : x
  2. Step 2: Convert to fraction form
    118,595.90/177,952.28 = 55,420.38/x
  3. Step 3: Cross multiply
    118,595.90x = 177,952.28 × 55,420.38
  4. Step 4: Simplify right side
    118,595.90x = 9,862,182,702.36
  5. Step 5: Solve for x
    x = 9,862,182,702.36/118,595.90
  6. Step 6: Final answer
    x = 83,157.88

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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.