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Finding the Fourth Proportional to 354,622.70, 531,982.65 and 117,940.70

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Solution

The fourth proportional to 354,622.70, 531,982.65 and 117,940.70 is: 176,927.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    354,622.70 : 531,982.65 = 117,940.70 : x
  2. Step 2: Convert to fraction form
    354,622.70/531,982.65 = 117,940.70/x
  3. Step 3: Cross multiply
    354,622.70x = 531,982.65 × 117,940.70
  4. Step 4: Simplify right side
    354,622.70x = 62,742,406,128.86
  5. Step 5: Solve for x
    x = 62,742,406,128.86/354,622.70
  6. Step 6: Final answer
    x = 176,927.21

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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.