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Finding the Fourth Proportional to 170,916.49, 256,325.32 and 65,710.45

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Solution

The fourth proportional to 170,916.49, 256,325.32 and 65,710.45 is: 98,546.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    170,916.49 : 256,325.32 = 65,710.45 : x
  2. Step 2: Convert to fraction form
    170,916.49/256,325.32 = 65,710.45/x
  3. Step 3: Cross multiply
    170,916.49x = 256,325.32 × 65,710.45
  4. Step 4: Simplify right side
    170,916.49x = 16,843,252,123.59
  5. Step 5: Solve for x
    x = 16,843,252,123.59/170,916.49
  6. Step 6: Final answer
    x = 98,546.68

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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.