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Finding the Fourth Proportional to 118,927.38, 178,420.80 and 83,935.38

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Solution

The fourth proportional to 118,927.38, 178,420.80 and 83,935.38 is: 125,924.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,927.38 : 178,420.80 = 83,935.38 : x
  2. Step 2: Convert to fraction form
    118,927.38/178,420.80 = 83,935.38/x
  3. Step 3: Cross multiply
    118,927.38x = 178,420.80 × 83,935.38
  4. Step 4: Simplify right side
    118,927.38x = 14,975,817,647.90
  5. Step 5: Solve for x
    x = 14,975,817,647.90/118,927.38
  6. Step 6: Final answer
    x = 125,924.05

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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.