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Finding the Fourth Proportional to 368,345.76, 552,463.89 and 102,078.51

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Solution

The fourth proportional to 368,345.76, 552,463.89 and 102,078.51 is: 153,102.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    368,345.76 : 552,463.89 = 102,078.51 : x
  2. Step 2: Convert to fraction form
    368,345.76/552,463.89 = 102,078.51/x
  3. Step 3: Cross multiply
    368,345.76x = 552,463.89 × 102,078.51
  4. Step 4: Simplify right side
    368,345.76x = 56,394,690,720.00
  5. Step 5: Solve for x
    x = 56,394,690,720.00/368,345.76
  6. Step 6: Final answer
    x = 153,102.59

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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.