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Finding the Fourth Proportional to 118,763.16, 163,893.42 and 64,315.92

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Solution

The fourth proportional to 118,763.16, 163,893.42 and 64,315.92 is: 88,756.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,763.16 : 163,893.42 = 64,315.92 : x
  2. Step 2: Convert to fraction form
    118,763.16/163,893.42 = 64,315.92/x
  3. Step 3: Cross multiply
    118,763.16x = 163,893.42 × 64,315.92
  4. Step 4: Simplify right side
    118,763.16x = 10,540,956,089.25
  5. Step 5: Solve for x
    x = 10,540,956,089.25/118,763.16
  6. Step 6: Final answer
    x = 88,756.11

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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.