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Finding the Fourth Proportional to 354,614.40, 531,806.40 and 117,916.80

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Solution

The fourth proportional to 354,614.40, 531,806.40 and 117,916.80 is: 176,836.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    354,614.40 : 531,806.40 = 117,916.80 : x
  2. Step 2: Convert to fraction form
    354,614.40/531,806.40 = 117,916.80/x
  3. Step 3: Cross multiply
    354,614.40x = 531,806.40 × 117,916.80
  4. Step 4: Simplify right side
    354,614.40x = 62,708,908,907.52
  5. Step 5: Solve for x
    x = 62,708,908,907.52/354,614.40
  6. Step 6: Final answer
    x = 176,836.89

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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.