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Finding the Fourth Proportional to 521,014.20, 780,938.10 and 296,482.20

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Solution

The fourth proportional to 521,014.20, 780,938.10 and 296,482.20 is: 444,391.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    521,014.20 : 780,938.10 = 296,482.20 : x
  2. Step 2: Convert to fraction form
    521,014.20/780,938.10 = 296,482.20/x
  3. Step 3: Cross multiply
    521,014.20x = 780,938.10 × 296,482.20
  4. Step 4: Simplify right side
    521,014.20x = 231,534,245,951.82
  5. Step 5: Solve for x
    x = 231,534,245,951.82/521,014.20
  6. Step 6: Final answer
    x = 444,391.43

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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.