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Finding the Fourth Proportional to 65,668.80, 98,503.36 and 18,925.44

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Solution

The fourth proportional to 65,668.80, 98,503.36 and 18,925.44 is: 28,388.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,668.80 : 98,503.36 = 18,925.44 : x
  2. Step 2: Convert to fraction form
    65,668.80/98,503.36 = 18,925.44/x
  3. Step 3: Cross multiply
    65,668.80x = 98,503.36 × 18,925.44
  4. Step 4: Simplify right side
    65,668.80x = 1,864,219,429.48
  5. Step 5: Solve for x
    x = 1,864,219,429.48/65,668.80
  6. Step 6: Final answer
    x = 28,388.21

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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.