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Finding the Fourth Proportional to 255,391.48, 383,109.24 and 65,850.17

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Solution

The fourth proportional to 255,391.48, 383,109.24 and 65,850.17 is: 98,780.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    255,391.48 : 383,109.24 = 65,850.17 : x
  2. Step 2: Convert to fraction form
    255,391.48/383,109.24 = 65,850.17/x
  3. Step 3: Cross multiply
    255,391.48x = 383,109.24 × 65,850.17
  4. Step 4: Simplify right side
    255,391.48x = 25,227,806,913.96
  5. Step 5: Solve for x
    x = 25,227,806,913.96/255,391.48
  6. Step 6: Final answer
    x = 98,780.93

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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.