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Finding the Fourth Proportional to 118,334.66, 163,303.18 and 64,620.32

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Solution

The fourth proportional to 118,334.66, 163,303.18 and 64,620.32 is: 89,176.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,334.66 : 163,303.18 = 64,620.32 : x
  2. Step 2: Convert to fraction form
    118,334.66/163,303.18 = 64,620.32/x
  3. Step 3: Cross multiply
    118,334.66x = 163,303.18 × 64,620.32
  4. Step 4: Simplify right side
    118,334.66x = 10,552,703,748.62
  5. Step 5: Solve for x
    x = 10,552,703,748.62/118,334.66
  6. Step 6: Final answer
    x = 89,176.78

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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.