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Finding the Fourth Proportional to 261,698.58, 391,950.09 and 156,301.38

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Solution

The fourth proportional to 261,698.58, 391,950.09 and 156,301.38 is: 234,095.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    261,698.58 : 391,950.09 = 156,301.38 : x
  2. Step 2: Convert to fraction form
    261,698.58/391,950.09 = 156,301.38/x
  3. Step 3: Cross multiply
    261,698.58x = 391,950.09 × 156,301.38
  4. Step 4: Simplify right side
    261,698.58x = 61,262,339,958.12
  5. Step 5: Solve for x
    x = 61,262,339,958.12/261,698.58
  6. Step 6: Final answer
    x = 234,095.04

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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.