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Finding the Fourth Proportional to 280,556.88, 387,181.08 and 153,233.52

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Solution

The fourth proportional to 280,556.88, 387,181.08 and 153,233.52 is: 211,469.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,556.88 : 387,181.08 = 153,233.52 : x
  2. Step 2: Convert to fraction form
    280,556.88/387,181.08 = 153,233.52/x
  3. Step 3: Cross multiply
    280,556.88x = 387,181.08 × 153,233.52
  4. Step 4: Simplify right side
    280,556.88x = 59,329,119,765.80
  5. Step 5: Solve for x
    x = 59,329,119,765.80/280,556.88
  6. Step 6: Final answer
    x = 211,469.13

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1.5x scale

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.