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Finding the Fourth Proportional to 383,757.57, 528,950.93 and 256,386.69

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Solution

The fourth proportional to 383,757.57, 528,950.93 and 256,386.69 is: 353,389.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    383,757.57 : 528,950.93 = 256,386.69 : x
  2. Step 2: Convert to fraction form
    383,757.57/528,950.93 = 256,386.69/x
  3. Step 3: Cross multiply
    383,757.57x = 528,950.93 × 256,386.69
  4. Step 4: Simplify right side
    383,757.57x = 135,615,976,833.19
  5. Step 5: Solve for x
    x = 135,615,976,833.19/383,757.57
  6. Step 6: Final answer
    x = 353,389.71

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.