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Finding the Fourth Proportional to 118,347.65, 163,320.87 and 67,357.88

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Solution

The fourth proportional to 118,347.65, 163,320.87 and 67,357.88 is: 92,954.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,347.65 : 163,320.87 = 67,357.88 : x
  2. Step 2: Convert to fraction form
    118,347.65/163,320.87 = 67,357.88/x
  3. Step 3: Cross multiply
    118,347.65x = 163,320.87 × 67,357.88
  4. Step 4: Simplify right side
    118,347.65x = 11,000,946,746.35
  5. Step 5: Solve for x
    x = 11,000,946,746.35/118,347.65
  6. Step 6: Final answer
    x = 92,954.50

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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.