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Finding the Fourth Proportional to 52,463.76, 78,678.60 and 17,394

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Solution

The fourth proportional to 52,463.76, 78,678.60 and 17,394 is: 26,085.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,463.76 : 78,678.60 = 17,394 : x
  2. Step 2: Convert to fraction form
    52,463.76/78,678.60 = 17,394/x
  3. Step 3: Cross multiply
    52,463.76x = 78,678.60 × 17,394
  4. Step 4: Simplify right side
    52,463.76x = 1,368,535,568.40
  5. Step 5: Solve for x
    x = 1,368,535,568.40/52,463.76
  6. Step 6: Final answer
    x = 26,085.35

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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.