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Finding the Fourth Proportional to 653,249.73, 978,955.65 and 519,536.55

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Solution

The fourth proportional to 653,249.73, 978,955.65 and 519,536.55 is: 778,573.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    653,249.73 : 978,955.65 = 519,536.55 : x
  2. Step 2: Convert to fraction form
    653,249.73/978,955.65 = 519,536.55/x
  3. Step 3: Cross multiply
    653,249.73x = 978,955.65 × 519,536.55
  4. Step 4: Simplify right side
    653,249.73x = 508,603,241,004.01
  5. Step 5: Solve for x
    x = 508,603,241,004.01/653,249.73
  6. Step 6: Final answer
    x = 778,573.98

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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.