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Finding the Fourth Proportional to 12,095.70, 18,148.74 and 6,553

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Solution

The fourth proportional to 12,095.70, 18,148.74 and 6,553 is: 9,832.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,095.70 : 18,148.74 = 6,553 : x
  2. Step 2: Convert to fraction form
    12,095.70/18,148.74 = 6,553/x
  3. Step 3: Cross multiply
    12,095.70x = 18,148.74 × 6,553
  4. Step 4: Simplify right side
    12,095.70x = 118,928,693.22
  5. Step 5: Solve for x
    x = 118,928,693.22/12,095.70
  6. Step 6: Final answer
    x = 9,832.31

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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.