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Finding the Fourth Proportional to 209,388.72, 314,084.93 and 59,628.89

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Solution

The fourth proportional to 209,388.72, 314,084.93 and 59,628.89 is: 89,443.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,388.72 : 314,084.93 = 59,628.89 : x
  2. Step 2: Convert to fraction form
    209,388.72/314,084.93 = 59,628.89/x
  3. Step 3: Cross multiply
    209,388.72x = 314,084.93 × 59,628.89
  4. Step 4: Simplify right side
    209,388.72x = 18,728,535,741.63
  5. Step 5: Solve for x
    x = 18,728,535,741.63/209,388.72
  6. Step 6: Final answer
    x = 89,443.86

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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.