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Finding the Fourth Proportional to 118,498.69, 163,532.19 and 64,782.64

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Solution

The fourth proportional to 118,498.69, 163,532.19 and 64,782.64 is: 89,402.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,498.69 : 163,532.19 = 64,782.64 : x
  2. Step 2: Convert to fraction form
    118,498.69/163,532.19 = 64,782.64/x
  3. Step 3: Cross multiply
    118,498.69x = 163,532.19 × 64,782.64
  4. Step 4: Simplify right side
    118,498.69x = 10,594,046,993.18
  5. Step 5: Solve for x
    x = 10,594,046,993.18/118,498.69
  6. Step 6: Final answer
    x = 89,402.23

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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.