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Finding the Fourth Proportional to 9,917.56, 13,686.86 and 6,554.47

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Solution

The fourth proportional to 9,917.56, 13,686.86 and 6,554.47 is: 9,045.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,917.56 : 13,686.86 = 6,554.47 : x
  2. Step 2: Convert to fraction form
    9,917.56/13,686.86 = 6,554.47/x
  3. Step 3: Cross multiply
    9,917.56x = 13,686.86 × 6,554.47
  4. Step 4: Simplify right side
    9,917.56x = 89,710,084.23
  5. Step 5: Solve for x
    x = 89,710,084.23/9,917.56
  6. Step 6: Final answer
    x = 9,045.58

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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.