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Finding the Fourth Proportional to 169,285.76, 253,665.60 and 64,047.68

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Solution

The fourth proportional to 169,285.76, 253,665.60 and 64,047.68 is: 95,972.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    169,285.76 : 253,665.60 = 64,047.68 : x
  2. Step 2: Convert to fraction form
    169,285.76/253,665.60 = 64,047.68/x
  3. Step 3: Cross multiply
    169,285.76x = 253,665.60 × 64,047.68
  4. Step 4: Simplify right side
    169,285.76x = 16,246,693,175.81
  5. Step 5: Solve for x
    x = 16,246,693,175.81/169,285.76
  6. Step 6: Final answer
    x = 95,972.00

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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.