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Finding the Fourth Proportional to 307,391.50, 424,203.51 and 173,255.50

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Solution

The fourth proportional to 307,391.50, 424,203.51 and 173,255.50 is: 239,094.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    307,391.50 : 424,203.51 = 173,255.50 : x
  2. Step 2: Convert to fraction form
    307,391.50/424,203.51 = 173,255.50/x
  3. Step 3: Cross multiply
    307,391.50x = 424,203.51 × 173,255.50
  4. Step 4: Simplify right side
    307,391.50x = 73,495,591,226.81
  5. Step 5: Solve for x
    x = 73,495,591,226.81/307,391.50
  6. Step 6: Final answer
    x = 239,094.42

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.