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Finding the Fourth Proportional to 118,739.10, 163,878.48 and 67,751.76

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Solution

The fourth proportional to 118,739.10, 163,878.48 and 67,751.76 is: 93,508.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,739.10 : 163,878.48 = 67,751.76 : x
  2. Step 2: Convert to fraction form
    118,739.10/163,878.48 = 67,751.76/x
  3. Step 3: Cross multiply
    118,739.10x = 163,878.48 × 67,751.76
  4. Step 4: Simplify right side
    118,739.10x = 11,103,055,446.12
  5. Step 5: Solve for x
    x = 11,103,055,446.12/118,739.10
  6. Step 6: Final answer
    x = 93,508.00

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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.