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Finding the Fourth Proportional to 424,870.92, 637,086.82 and 125,313.36

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Solution

The fourth proportional to 424,870.92, 637,086.82 and 125,313.36 is: 187,905.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    424,870.92 : 637,086.82 = 125,313.36 : x
  2. Step 2: Convert to fraction form
    424,870.92/637,086.82 = 125,313.36/x
  3. Step 3: Cross multiply
    424,870.92x = 637,086.82 × 125,313.36
  4. Step 4: Simplify right side
    424,870.92x = 79,835,490,025.92
  5. Step 5: Solve for x
    x = 79,835,490,025.92/424,870.92
  6. Step 6: Final answer
    x = 187,905.28

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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.