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Finding the Fourth Proportional to 353,037.69, 529,390.17 and 128,239.65

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Solution

The fourth proportional to 353,037.69, 529,390.17 and 128,239.65 is: 192,299.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    353,037.69 : 529,390.17 = 128,239.65 : x
  2. Step 2: Convert to fraction form
    353,037.69/529,390.17 = 128,239.65/x
  3. Step 3: Cross multiply
    353,037.69x = 529,390.17 × 128,239.65
  4. Step 4: Simplify right side
    353,037.69x = 67,888,810,114.24
  5. Step 5: Solve for x
    x = 67,888,810,114.24/353,037.69
  6. Step 6: Final answer
    x = 192,299.04

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1.5x scale

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.