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Finding the Fourth Proportional to 261,025.40, 391,581.30 and 111,337.40

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Solution

The fourth proportional to 261,025.40, 391,581.30 and 111,337.40 is: 167,024.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    261,025.40 : 391,581.30 = 111,337.40 : x
  2. Step 2: Convert to fraction form
    261,025.40/391,581.30 = 111,337.40/x
  3. Step 3: Cross multiply
    261,025.40x = 391,581.30 × 111,337.40
  4. Step 4: Simplify right side
    261,025.40x = 43,597,643,830.62
  5. Step 5: Solve for x
    x = 43,597,643,830.62/261,025.40
  6. Step 6: Final answer
    x = 167,024.53

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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.