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Finding the Fourth Proportional to 118,393.57, 163,385.54 and 64,682.07

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Solution

The fourth proportional to 118,393.57, 163,385.54 and 64,682.07 is: 89,262.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,393.57 : 163,385.54 = 64,682.07 : x
  2. Step 2: Convert to fraction form
    118,393.57/163,385.54 = 64,682.07/x
  3. Step 3: Cross multiply
    118,393.57x = 163,385.54 × 64,682.07
  4. Step 4: Simplify right side
    118,393.57x = 10,568,113,794.93
  5. Step 5: Solve for x
    x = 10,568,113,794.93/118,393.57
  6. Step 6: Final answer
    x = 89,262.57

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1.5x scale

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.