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Finding the Fourth Proportional to 118,613.40, 177,920.10 and 114,466.20

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Solution

The fourth proportional to 118,613.40, 177,920.10 and 114,466.20 is: 171,699.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,613.40 : 177,920.10 = 114,466.20 : x
  2. Step 2: Convert to fraction form
    118,613.40/177,920.10 = 114,466.20/x
  3. Step 3: Cross multiply
    118,613.40x = 177,920.10 × 114,466.20
  4. Step 4: Simplify right side
    118,613.40x = 20,365,837,750.62
  5. Step 5: Solve for x
    x = 20,365,837,750.62/118,613.40
  6. Step 6: Final answer
    x = 171,699.30

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.