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Finding the Fourth Proportional to 128,785.89, 193,208.28 and 44,545.98

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Solution

The fourth proportional to 128,785.89, 193,208.28 and 44,545.98 is: 66,829.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,785.89 : 193,208.28 = 44,545.98 : x
  2. Step 2: Convert to fraction form
    128,785.89/193,208.28 = 44,545.98/x
  3. Step 3: Cross multiply
    128,785.89x = 193,208.28 × 44,545.98
  4. Step 4: Simplify right side
    128,785.89x = 8,606,652,176.71
  5. Step 5: Solve for x
    x = 8,606,652,176.71/128,785.89
  6. Step 6: Final answer
    x = 66,829.15

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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.