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Finding the Fourth Proportional to 612,774.24, 919,186.08 and 213,455.40

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Solution

The fourth proportional to 612,774.24, 919,186.08 and 213,455.40 is: 320,191.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    612,774.24 : 919,186.08 = 213,455.40 : x
  2. Step 2: Convert to fraction form
    612,774.24/919,186.08 = 213,455.40/x
  3. Step 3: Cross multiply
    612,774.24x = 919,186.08 × 213,455.40
  4. Step 4: Simplify right side
    612,774.24x = 196,205,232,380.83
  5. Step 5: Solve for x
    x = 196,205,232,380.83/612,774.24
  6. Step 6: Final answer
    x = 320,191.71

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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.