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Finding the Fourth Proportional to 52,654.50, 78,994.71 and 15,718.50

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Solution

The fourth proportional to 52,654.50, 78,994.71 and 15,718.50 is: 23,581.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,654.50 : 78,994.71 = 15,718.50 : x
  2. Step 2: Convert to fraction form
    52,654.50/78,994.71 = 15,718.50/x
  3. Step 3: Cross multiply
    52,654.50x = 78,994.71 × 15,718.50
  4. Step 4: Simplify right side
    52,654.50x = 1,241,678,349.14
  5. Step 5: Solve for x
    x = 1,241,678,349.14/52,654.50
  6. Step 6: Final answer
    x = 23,581.62

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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.