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Finding the Fourth Proportional to 474,679.10, 655,031.80 and 259,777.60

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Solution

The fourth proportional to 474,679.10, 655,031.80 and 259,777.60 is: 358,479.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    474,679.10 : 655,031.80 = 259,777.60 : x
  2. Step 2: Convert to fraction form
    474,679.10/655,031.80 = 259,777.60/x
  3. Step 3: Cross multiply
    474,679.10x = 655,031.80 × 259,777.60
  4. Step 4: Simplify right side
    474,679.10x = 170,162,588,927.68
  5. Step 5: Solve for x
    x = 170,162,588,927.68/474,679.10
  6. Step 6: Final answer
    x = 358,479.21

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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.