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Finding the Fourth Proportional to 70,696.92, 106,045.38 and 28,595.64

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Solution

The fourth proportional to 70,696.92, 106,045.38 and 28,595.64 is: 42,893.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,696.92 : 106,045.38 = 28,595.64 : x
  2. Step 2: Convert to fraction form
    70,696.92/106,045.38 = 28,595.64/x
  3. Step 3: Cross multiply
    70,696.92x = 106,045.38 × 28,595.64
  4. Step 4: Simplify right side
    70,696.92x = 3,032,435,510.14
  5. Step 5: Solve for x
    x = 3,032,435,510.14/70,696.92
  6. Step 6: Final answer
    x = 42,893.46

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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.