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Finding the Fourth Proportional to 217,057.40, 325,542.90 and 104,737.40

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Solution

The fourth proportional to 217,057.40, 325,542.90 and 104,737.40 is: 157,085.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,057.40 : 325,542.90 = 104,737.40 : x
  2. Step 2: Convert to fraction form
    217,057.40/325,542.90 = 104,737.40/x
  3. Step 3: Cross multiply
    217,057.40x = 325,542.90 × 104,737.40
  4. Step 4: Simplify right side
    217,057.40x = 34,096,516,934.46
  5. Step 5: Solve for x
    x = 34,096,516,934.46/217,057.40
  6. Step 6: Final answer
    x = 157,085.25

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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.