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Finding the Fourth Proportional to 118,367.50, 163,347.15 and 68,066.50

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Solution

The fourth proportional to 118,367.50, 163,347.15 and 68,066.50 is: 93,931.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,367.50 : 163,347.15 = 68,066.50 : x
  2. Step 2: Convert to fraction form
    118,367.50/163,347.15 = 68,066.50/x
  3. Step 3: Cross multiply
    118,367.50x = 163,347.15 × 68,066.50
  4. Step 4: Simplify right side
    118,367.50x = 11,118,468,785.48
  5. Step 5: Solve for x
    x = 11,118,468,785.48/118,367.50
  6. Step 6: Final answer
    x = 93,931.77

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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.