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Finding the Fourth Proportional to 261,134.81, 358,019.16 and 256,410.89

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Solution

The fourth proportional to 261,134.81, 358,019.16 and 256,410.89 is: 351,542.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    261,134.81 : 358,019.16 = 256,410.89 : x
  2. Step 2: Convert to fraction form
    261,134.81/358,019.16 = 256,410.89/x
  3. Step 3: Cross multiply
    261,134.81x = 358,019.16 × 256,410.89
  4. Step 4: Simplify right side
    261,134.81x = 91,800,008,380.50
  5. Step 5: Solve for x
    x = 91,800,008,380.50/261,134.81
  6. Step 6: Final answer
    x = 351,542.60

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.