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Finding the Fourth Proportional to 118,015.76, 162,859.67 and 64,301.16

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Solution

The fourth proportional to 118,015.76, 162,859.67 and 64,301.16 is: 88,734.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,015.76 : 162,859.67 = 64,301.16 : x
  2. Step 2: Convert to fraction form
    118,015.76/162,859.67 = 64,301.16/x
  3. Step 3: Cross multiply
    118,015.76x = 162,859.67 × 64,301.16
  4. Step 4: Simplify right side
    118,015.76x = 10,472,064,883.92
  5. Step 5: Solve for x
    x = 10,472,064,883.92/118,015.76
  6. Step 6: Final answer
    x = 88,734.47

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Why These Related Problems?

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