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Finding the Fourth Proportional to 474,678.60, 655,031.12 and 259,777.10

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Solution

The fourth proportional to 474,678.60, 655,031.12 and 259,777.10 is: 358,478.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    474,678.60 : 655,031.12 = 259,777.10 : x
  2. Step 2: Convert to fraction form
    474,678.60/655,031.12 = 259,777.10/x
  3. Step 3: Cross multiply
    474,678.60x = 655,031.12 × 259,777.10
  4. Step 4: Simplify right side
    474,678.60x = 170,162,080,189.31
  5. Step 5: Solve for x
    x = 170,162,080,189.31/474,678.60
  6. Step 6: Final answer
    x = 358,478.52

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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.