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Finding the Fourth Proportional to 354,569.71, 531,859.20 and 117,912.37

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Solution

The fourth proportional to 354,569.71, 531,859.20 and 117,912.37 is: 176,870.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    354,569.71 : 531,859.20 = 117,912.37 : x
  2. Step 2: Convert to fraction form
    354,569.71/531,859.20 = 117,912.37/x
  3. Step 3: Cross multiply
    354,569.71x = 531,859.20 × 117,912.37
  4. Step 4: Simplify right side
    354,569.71x = 62,712,778,778.30
  5. Step 5: Solve for x
    x = 62,712,778,778.30/354,569.71
  6. Step 6: Final answer
    x = 176,870.10

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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.