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Finding the Fourth Proportional to 463,274.80, 639,289.58 and 259,291.42

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Solution

The fourth proportional to 463,274.80, 639,289.58 and 259,291.42 is: 357,805.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    463,274.80 : 639,289.58 = 259,291.42 : x
  2. Step 2: Convert to fraction form
    463,274.80/639,289.58 = 259,291.42/x
  3. Step 3: Cross multiply
    463,274.80x = 639,289.58 × 259,291.42
  4. Step 4: Simplify right side
    463,274.80x = 165,762,302,989.40
  5. Step 5: Solve for x
    x = 165,762,302,989.40/463,274.80
  6. Step 6: Final answer
    x = 357,805.57

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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.