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Finding the Fourth Proportional to 323,318.88, 485,050.68 and 98,699.28

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Solution

The fourth proportional to 323,318.88, 485,050.68 and 98,699.28 is: 148,071.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    323,318.88 : 485,050.68 = 98,699.28 : x
  2. Step 2: Convert to fraction form
    323,318.88/485,050.68 = 98,699.28/x
  3. Step 3: Cross multiply
    323,318.88x = 485,050.68 × 98,699.28
  4. Step 4: Simplify right side
    323,318.88x = 47,874,152,879.51
  5. Step 5: Solve for x
    x = 47,874,152,879.51/323,318.88
  6. Step 6: Final answer
    x = 148,071.01

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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.