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Finding the Fourth Proportional to 128,595.76, 192,902.90 and 44,354.70

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Solution

The fourth proportional to 128,595.76, 192,902.90 and 44,354.70 is: 66,535.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,595.76 : 192,902.90 = 44,354.70 : x
  2. Step 2: Convert to fraction form
    128,595.76/192,902.90 = 44,354.70/x
  3. Step 3: Cross multiply
    128,595.76x = 192,902.90 × 44,354.70
  4. Step 4: Simplify right side
    128,595.76x = 8,556,150,036.86
  5. Step 5: Solve for x
    x = 8,556,150,036.86/128,595.76
  6. Step 6: Final answer
    x = 66,535.24

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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.