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Finding the Fourth Proportional to 297,000.80, 445,501.20 and 191,938.40

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Solution

The fourth proportional to 297,000.80, 445,501.20 and 191,938.40 is: 287,907.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    297,000.80 : 445,501.20 = 191,938.40 : x
  2. Step 2: Convert to fraction form
    297,000.80/445,501.20 = 191,938.40/x
  3. Step 3: Cross multiply
    297,000.80x = 445,501.20 × 191,938.40
  4. Step 4: Simplify right side
    297,000.80x = 85,508,787,526.08
  5. Step 5: Solve for x
    x = 85,508,787,526.08/297,000.80
  6. Step 6: Final answer
    x = 287,907.60

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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.