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Finding the Fourth Proportional to 383,757.40, 575,117.70 and 257,037.40

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Solution

The fourth proportional to 383,757.40, 575,117.70 and 257,037.40 is: 385,208.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    383,757.40 : 575,117.70 = 257,037.40 : x
  2. Step 2: Convert to fraction form
    383,757.40/575,117.70 = 257,037.40/x
  3. Step 3: Cross multiply
    383,757.40x = 575,117.70 × 257,037.40
  4. Step 4: Simplify right side
    383,757.40x = 147,826,758,301.98
  5. Step 5: Solve for x
    x = 147,826,758,301.98/383,757.40
  6. Step 6: Final answer
    x = 385,208.88

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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.