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Finding the Fourth Proportional to 118,482.66, 163,505.70 and 64,767.69

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Solution

The fourth proportional to 118,482.66, 163,505.70 and 64,767.69 is: 89,379.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,482.66 : 163,505.70 = 64,767.69 : x
  2. Step 2: Convert to fraction form
    118,482.66/163,505.70 = 64,767.69/x
  3. Step 3: Cross multiply
    118,482.66x = 163,505.70 × 64,767.69
  4. Step 4: Simplify right side
    118,482.66x = 10,589,886,490.83
  5. Step 5: Solve for x
    x = 10,589,886,490.83/118,482.66
  6. Step 6: Final answer
    x = 89,379.21

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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.