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Finding the Fourth Proportional to 383,711.40, 529,129.53 and 254,604.69

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Solution

The fourth proportional to 383,711.40, 529,129.53 and 254,604.69 is: 351,094.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    383,711.40 : 529,129.53 = 254,604.69 : x
  2. Step 2: Convert to fraction form
    383,711.40/529,129.53 = 254,604.69/x
  3. Step 3: Cross multiply
    383,711.40x = 529,129.53 × 254,604.69
  4. Step 4: Simplify right side
    383,711.40x = 134,718,859,955.50
  5. Step 5: Solve for x
    x = 134,718,859,955.50/383,711.40
  6. Step 6: Final answer
    x = 351,094.23

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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.