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Finding the Fourth Proportional to 521,570.40, 719,060.40 and 445,902.27

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Solution

The fourth proportional to 521,570.40, 719,060.40 and 445,902.27 is: 614,740.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    521,570.40 : 719,060.40 = 445,902.27 : x
  2. Step 2: Convert to fraction form
    521,570.40/719,060.40 = 445,902.27/x
  3. Step 3: Cross multiply
    521,570.40x = 719,060.40 × 445,902.27
  4. Step 4: Simplify right side
    521,570.40x = 320,630,664,627.11
  5. Step 5: Solve for x
    x = 320,630,664,627.11/521,570.40
  6. Step 6: Final answer
    x = 614,740.91

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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.