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Finding the Fourth Proportional to 261,015.70, 391,523.55 and 176,816.20

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Solution

The fourth proportional to 261,015.70, 391,523.55 and 176,816.20 is: 265,224.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    261,015.70 : 391,523.55 = 176,816.20 : x
  2. Step 2: Convert to fraction form
    261,015.70/391,523.55 = 176,816.20/x
  3. Step 3: Cross multiply
    261,015.70x = 391,523.55 × 176,816.20
  4. Step 4: Simplify right side
    261,015.70x = 69,227,706,321.51
  5. Step 5: Solve for x
    x = 69,227,706,321.51/261,015.70
  6. Step 6: Final answer
    x = 265,224.30

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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.