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Finding the Fourth Proportional to 118,393.44, 163,385.36 and 64,681.94

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Solution

The fourth proportional to 118,393.44, 163,385.36 and 64,681.94 is: 89,262.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,393.44 : 163,385.36 = 64,681.94 : x
  2. Step 2: Convert to fraction form
    118,393.44/163,385.36 = 64,681.94/x
  3. Step 3: Cross multiply
    118,393.44x = 163,385.36 × 64,681.94
  4. Step 4: Simplify right side
    118,393.44x = 10,568,082,052.40
  5. Step 5: Solve for x
    x = 10,568,082,052.40/118,393.44
  6. Step 6: Final answer
    x = 89,262.40

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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.