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Finding the Fourth Proportional to 8,470.18, 11,688.06 and 5,113.54

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Solution

The fourth proportional to 8,470.18, 11,688.06 and 5,113.54 is: 7,056.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,470.18 : 11,688.06 = 5,113.54 : x
  2. Step 2: Convert to fraction form
    8,470.18/11,688.06 = 5,113.54/x
  3. Step 3: Cross multiply
    8,470.18x = 11,688.06 × 5,113.54
  4. Step 4: Simplify right side
    8,470.18x = 59,767,362.33
  5. Step 5: Solve for x
    x = 59,767,362.33/8,470.18
  6. Step 6: Final answer
    x = 7,056.21

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