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Finding the Fourth Proportional to 118,146.64, 163,045.44 and 64,433.92

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Solution

The fourth proportional to 118,146.64, 163,045.44 and 64,433.92 is: 88,920.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,146.64 : 163,045.44 = 64,433.92 : x
  2. Step 2: Convert to fraction form
    118,146.64/163,045.44 = 64,433.92/x
  3. Step 3: Cross multiply
    118,146.64x = 163,045.44 × 64,433.92
  4. Step 4: Simplify right side
    118,146.64x = 10,505,656,837.32
  5. Step 5: Solve for x
    x = 10,505,656,837.32/118,146.64
  6. Step 6: Final answer
    x = 88,920.49

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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.