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Finding the Fourth Proportional to 40,698.80, 61,048.20 and 35,514.80

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Solution

The fourth proportional to 40,698.80, 61,048.20 and 35,514.80 is: 53,272.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,698.80 : 61,048.20 = 35,514.80 : x
  2. Step 2: Convert to fraction form
    40,698.80/61,048.20 = 35,514.80/x
  3. Step 3: Cross multiply
    40,698.80x = 61,048.20 × 35,514.80
  4. Step 4: Simplify right side
    40,698.80x = 2,168,114,613.36
  5. Step 5: Solve for x
    x = 2,168,114,613.36/40,698.80
  6. Step 6: Final answer
    x = 53,272.20

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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.