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Finding the Fourth Proportional to 245,663.84, 339,057.36 and 142,282.88

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Solution

The fourth proportional to 245,663.84, 339,057.36 and 142,282.88 is: 196,374.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    245,663.84 : 339,057.36 = 142,282.88 : x
  2. Step 2: Convert to fraction form
    245,663.84/339,057.36 = 142,282.88/x
  3. Step 3: Cross multiply
    245,663.84x = 339,057.36 × 142,282.88
  4. Step 4: Simplify right side
    245,663.84x = 48,242,057,666.00
  5. Step 5: Solve for x
    x = 48,242,057,666.00/245,663.84
  6. Step 6: Final answer
    x = 196,374.27

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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.