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Finding the Fourth Proportional to 62,905.36, 86,715.48 and 41,647.72

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Solution

The fourth proportional to 62,905.36, 86,715.48 and 41,647.72 is: 57,411.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    62,905.36 : 86,715.48 = 41,647.72 : x
  2. Step 2: Convert to fraction form
    62,905.36/86,715.48 = 41,647.72/x
  3. Step 3: Cross multiply
    62,905.36x = 86,715.48 × 41,647.72
  4. Step 4: Simplify right side
    62,905.36x = 3,611,502,030.71
  5. Step 5: Solve for x
    x = 3,611,502,030.71/62,905.36
  6. Step 6: Final answer
    x = 57,411.67

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.