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Finding the Fourth Proportional to 8,905.35, 13,353.93 and 5,009.76

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Solution

The fourth proportional to 8,905.35, 13,353.93 and 5,009.76 is: 7,512.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,905.35 : 13,353.93 = 5,009.76 : x
  2. Step 2: Convert to fraction form
    8,905.35/13,353.93 = 5,009.76/x
  3. Step 3: Cross multiply
    8,905.35x = 13,353.93 × 5,009.76
  4. Step 4: Simplify right side
    8,905.35x = 66,899,984.36
  5. Step 5: Solve for x
    x = 66,899,984.36/8,905.35
  6. Step 6: Final answer
    x = 7,512.34

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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.