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Finding the Fourth Proportional to 521,570.80, 782,647.80 and 222,000.40

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Solution

The fourth proportional to 521,570.80, 782,647.80 and 222,000.40 is: 333,124.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    521,570.80 : 782,647.80 = 222,000.40 : x
  2. Step 2: Convert to fraction form
    521,570.80/782,647.80 = 222,000.40/x
  3. Step 3: Cross multiply
    521,570.80x = 782,647.80 × 222,000.40
  4. Step 4: Simplify right side
    521,570.80x = 173,748,124,659.12
  5. Step 5: Solve for x
    x = 173,748,124,659.12/521,570.80
  6. Step 6: Final answer
    x = 333,124.72

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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.