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Finding the Fourth Proportional to 118,488.88, 163,514.48 and 70,770.16

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Solution

The fourth proportional to 118,488.88, 163,514.48 and 70,770.16 is: 97,662.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,488.88 : 163,514.48 = 70,770.16 : x
  2. Step 2: Convert to fraction form
    118,488.88/163,514.48 = 70,770.16/x
  3. Step 3: Cross multiply
    118,488.88x = 163,514.48 × 70,770.16
  4. Step 4: Simplify right side
    118,488.88x = 11,571,945,911.92
  5. Step 5: Solve for x
    x = 11,571,945,911.92/118,488.88
  6. Step 6: Final answer
    x = 97,662.72

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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.