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Finding the Fourth Proportional to 169,856.64, 254,790.72 and 45,197.76

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Solution

The fourth proportional to 169,856.64, 254,790.72 and 45,197.76 is: 67,798.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    169,856.64 : 254,790.72 = 45,197.76 : x
  2. Step 2: Convert to fraction form
    169,856.64/254,790.72 = 45,197.76/x
  3. Step 3: Cross multiply
    169,856.64x = 254,790.72 × 45,197.76
  4. Step 4: Simplify right side
    169,856.64x = 11,515,969,812.79
  5. Step 5: Solve for x
    x = 11,515,969,812.79/169,856.64
  6. Step 6: Final answer
    x = 67,798.17

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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.