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Finding the Fourth Proportional to 719,992.56, 993,570.64 and 397,695.76

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Solution

The fourth proportional to 719,992.56, 993,570.64 and 397,695.76 is: 548,809.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    719,992.56 : 993,570.64 = 397,695.76 : x
  2. Step 2: Convert to fraction form
    719,992.56/993,570.64 = 397,695.76/x
  3. Step 3: Cross multiply
    719,992.56x = 993,570.64 × 397,695.76
  4. Step 4: Simplify right side
    719,992.56x = 395,138,830,788.49
  5. Step 5: Solve for x
    x = 395,138,830,788.49/719,992.56
  6. Step 6: Final answer
    x = 548,809.60

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.