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Finding the Fourth Proportional to 383,750.40, 575,107.20 and 257,030.40

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Solution

The fourth proportional to 383,750.40, 575,107.20 and 257,030.40 is: 385,198.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    383,750.40 : 575,107.20 = 257,030.40 : x
  2. Step 2: Convert to fraction form
    383,750.40/575,107.20 = 257,030.40/x
  3. Step 3: Cross multiply
    383,750.40x = 575,107.20 × 257,030.40
  4. Step 4: Simplify right side
    383,750.40x = 147,820,033,658.88
  5. Step 5: Solve for x
    x = 147,820,033,658.88/383,750.40
  6. Step 6: Final answer
    x = 385,198.38

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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.