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Finding the Fourth Proportional to 252,665.55, 379,004.40 and 75,178.35

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Solution

The fourth proportional to 252,665.55, 379,004.40 and 75,178.35 is: 112,769.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    252,665.55 : 379,004.40 = 75,178.35 : x
  2. Step 2: Convert to fraction form
    252,665.55/379,004.40 = 75,178.35/x
  3. Step 3: Cross multiply
    252,665.55x = 379,004.40 × 75,178.35
  4. Step 4: Simplify right side
    252,665.55x = 28,492,925,434.74
  5. Step 5: Solve for x
    x = 28,492,925,434.74/252,665.55
  6. Step 6: Final answer
    x = 112,769.33

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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.