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Finding the Fourth Proportional to 661,805.76, 913,287.84 and 360,000.96

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Solution

The fourth proportional to 661,805.76, 913,287.84 and 360,000.96 is: 496,799.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    661,805.76 : 913,287.84 = 360,000.96 : x
  2. Step 2: Convert to fraction form
    661,805.76/913,287.84 = 360,000.96/x
  3. Step 3: Cross multiply
    661,805.76x = 913,287.84 × 360,000.96
  4. Step 4: Simplify right side
    661,805.76x = 328,784,499,156.33
  5. Step 5: Solve for x
    x = 328,784,499,156.33/661,805.76
  6. Step 6: Final answer
    x = 496,799.09

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.