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Finding the Fourth Proportional to 58,715.40, 87,905.28 and 38,954.64

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Solution

The fourth proportional to 58,715.40, 87,905.28 and 38,954.64 is: 58,320.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,715.40 : 87,905.28 = 38,954.64 : x
  2. Step 2: Convert to fraction form
    58,715.40/87,905.28 = 38,954.64/x
  3. Step 3: Cross multiply
    58,715.40x = 87,905.28 × 38,954.64
  4. Step 4: Simplify right side
    58,715.40x = 3,424,318,536.50
  5. Step 5: Solve for x
    x = 3,424,318,536.50/58,715.40
  6. Step 6: Final answer
    x = 58,320.62

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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.