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Finding the Fourth Proportional to 578,188.40, 866,591.40 and 297,561.20

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Solution

The fourth proportional to 578,188.40, 866,591.40 and 297,561.20 is: 445,986.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    578,188.40 : 866,591.40 = 297,561.20 : x
  2. Step 2: Convert to fraction form
    578,188.40/866,591.40 = 297,561.20/x
  3. Step 3: Cross multiply
    578,188.40x = 866,591.40 × 297,561.20
  4. Step 4: Simplify right side
    578,188.40x = 257,863,976,893.68
  5. Step 5: Solve for x
    x = 257,863,976,893.68/578,188.40
  6. Step 6: Final answer
    x = 445,986.08

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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.